1245739488 has 48 divisors (see below), whose sum is σ = 3737220480. Its totient is φ = 355925376.

The previous prime is 1245739477. The next prime is 1245739489. The reversal of 1245739488 is 8849375421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-5 number, since 5×1245739488⁵ (a number of 47 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1245739488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245739489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926218 + ... + 927561.

It is an arithmetic number, because the mean of its divisors is an integer number (77858760).

Almost surely, 2^1245739488 is an apocalyptic number.

It is an amenable number.

1245739488 is an abundant number, since it is smaller than the sum of its proper divisors (2491480992).

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

1245739488 is a wasteful number, since it uses less digits than its factorization.

1245739488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853799 (or 1853791 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 1245739488 is about 35295.0348916105. The cubic root of 1245739488 is about 1075.9920859181.

The spelling of 1245739488 in words is "one billion, two hundred forty-five million, seven hundred thirty-nine thousand, four hundred eighty-eight".