1230381892 has 12 divisors (see below), whose sum is σ = 2154102160. Its totient is φ = 614924136.

The previous prime is 1230381877. The next prime is 1230381907. The reversal of 1230381892 is 2981830321.

It is an interprime number because it is at equal distance from previous prime (1230381877) and next prime (1230381907).

It is a super-2 number, since 2×1230381892² = 3027679200322999328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56142 + ... + 74917.

Almost surely, 2^1230381892 is an apocalyptic number.

It is an amenable number.

1230381892 is a deficient number, since it is larger than the sum of its proper divisors (923720268).

1230381892 is a wasteful number, since it uses less digits than its factorization.

1230381892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133410 (or 133408 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1230381892 is about 35076.7999110523. The cubic root of 1230381892 is about 1071.5521457096.

The spelling of 1230381892 in words is "one billion, two hundred thirty million, three hundred eighty-one thousand, eight hundred ninety-two".