1369146240 has 800 divisors, whose sum is σ = 6222589560. Its totient is φ = 284497920.

The previous prime is 1369146239. The next prime is 1369146263. The reversal of 1369146240 is 426419631.

1369146240 is a `hidden beast` number, since 13 + 6 + 9 + 14 + 624 + 0 = 666.

It is a super-2 number, since 2×1369146240² = 3749122853012275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1369146195 and 1369146204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 124467835 + ... + 124467845.

Almost surely, 2^1369146240 is an apocalyptic number.

1369146240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1369146240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3111294780).

1369146240 is an abundant number, since it is smaller than the sum of its proper divisors (4853443320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1369146240 is an frugal number, since it uses more digits than its factorization.

1369146240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1369146240 is about 37001.9761634429. The cubic root of 1369146240 is about 1110.4097829588.

The spelling of 1369146240 in words is "one billion, three hundred sixty-nine million, one hundred forty-six thousand, two hundred forty".