1381044492 has 60 divisors (see below), whose sum is σ = 3698415336. Its totient is φ = 449115840.

The previous prime is 1381044491. The next prime is 1381044517. The reversal of 1381044492 is 2944401831.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1381044491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38698 + ... + 65265.

Almost surely, 2^1381044492 is an apocalyptic number.

1381044492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1381044492 is an abundant number, since it is smaller than the sum of its proper divisors (2317370844).

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

1381044492 is a wasteful number, since it uses less digits than its factorization.

1381044492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104020 (or 104009 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1381044492 is about 37162.4069726384. The cubic root of 1381044492 is about 1113.6170973612.

The spelling of 1381044492 in words is "one billion, three hundred eighty-one million, forty-four thousand, four hundred ninety-two".