1478916431 has 2 divisors, whose sum is σ = 1478916432. Its totient is φ = 1478916430.

The previous prime is 1478916427. The next prime is 1478916457. The reversal of 1478916431 is 1346198741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1478916431 - 2² = 1478916427 is a prime.

It is a super-2 number, since 2×1478916431² = 4374387619763555522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1478916401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739458215 + 739458216.

It is an arithmetic number, because the mean of its divisors is an integer number (739458216).

Almost surely, 2^1478916431 is an apocalyptic number.

1478916431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478916431 is an equidigital number, since it uses as much as digits as its factorization.

1478916431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 1478916431 is about 38456.6825272280. The cubic root of 1478916431 is about 1139.3256581785.

The spelling of 1478916431 in words is "one billion, four hundred seventy-eight million, nine hundred sixteen thousand, four hundred thirty-one".