1391454892 has 12 divisors (see below), whose sum is σ = 2563206520. Its totient is φ = 659110176.

The previous prime is 1391454877. The next prime is 1391454899. The reversal of 1391454892 is 2984541931.

It is a super-2 number, since 2×1391454892² = 3872293432941463328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1391454899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9154233 + ... + 9154384.

Almost surely, 2^1391454892 is an apocalyptic number.

It is an amenable number.

1391454892 is a deficient number, since it is larger than the sum of its proper divisors (1171751628).

1391454892 is a wasteful number, since it uses less digits than its factorization.

1391454892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18308640 (or 18308638 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 1391454892 is about 37302.2102830382. The cubic root of 1391454892 is about 1116.4082675687.

The spelling of 1391454892 in words is "one billion, three hundred ninety-one million, four hundred fifty-four thousand, eight hundred ninety-two".