1381264734 has 32 divisors (see below), whose sum is σ = 2777803776. Its totient is φ = 457884000.

The previous prime is 1381264733. The next prime is 1381264783. The reversal of 1381264734 is 4374621831.

It is a junction number, because it is equal to n+sod(n) for n = 1381264692 and 1381264701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381264733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1427919 + ... + 1428885.

It is an arithmetic number, because the mean of its divisors is an integer number (86806368).

Almost surely, 2^1381264734 is an apocalyptic number.

1381264734 is an abundant number, since it is smaller than the sum of its proper divisors (1396539042).

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

1381264734 is a wasteful number, since it uses less digits than its factorization.

1381264734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its digits is 96768, while the sum is 39.

The square root of 1381264734 is about 37165.3700909866. The cubic root of 1381264734 is about 1113.6762922246.

The spelling of 1381264734 in words is "one billion, three hundred eighty-one million, two hundred sixty-four thousand, seven hundred thirty-four".