1381018892 has 12 divisors (see below), whose sum is σ = 2636490696. Its totient is φ = 627735840.

The previous prime is 1381018883. The next prime is 1381018897. The reversal of 1381018892 is 2988101831.

It is not an unprimeable number, because it can be changed into a prime (1381018897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15693353 + ... + 15693440.

It is an arithmetic number, because the mean of its divisors is an integer number (219707558).

Almost surely, 2^1381018892 is an apocalyptic number.

It is an amenable number.

1381018892 is a deficient number, since it is larger than the sum of its proper divisors (1255471804).

1381018892 is a wasteful number, since it uses less digits than its factorization.

1381018892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31386808 (or 31386806 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 1381018892 is about 37162.0625369475. The cubic root of 1381018892 is about 1113.6102163920.

The spelling of 1381018892 in words is "one billion, three hundred eighty-one million, eighteen thousand, eight hundred ninety-two".