1478634631 has 2 divisors, whose sum is σ = 1478634632. Its totient is φ = 1478634630.

The previous prime is 1478634611. The next prime is 1478634667. The reversal of 1478634631 is 1364368741.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1478634631 - 2⁹ = 1478634119 is a prime.

It is a super-2 number, since 2×1478634631² = 4372720743985012322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1478634611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739317315 + 739317316.

It is an arithmetic number, because the mean of its divisors is an integer number (739317316).

Almost surely, 2^1478634631 is an apocalyptic number.

1478634631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1478634631 is an equidigital number, since it uses as much as digits as its factorization.

1478634631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 1478634631 is about 38453.0184901004. The cubic root of 1478634631 is about 1139.2532893464.

The spelling of 1478634631 in words is "one billion, four hundred seventy-eight million, six hundred thirty-four thousand, six hundred thirty-one".