1631424557 has 8 divisors (see below), whose sum is σ = 1885435200. Its totient is φ = 1382651424.

The previous prime is 1631424541. The next prime is 1631424559. The reversal of 1631424557 is 7554241361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1631424557 - 2⁴ = 1631424541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1631424557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631424559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308707 + ... + 1309952.

It is an arithmetic number, because the mean of its divisors is an integer number (235679400).

Almost surely, 2^1631424557 is an apocalyptic number.

It is an amenable number.

1631424557 is a deficient number, since it is larger than the sum of its proper divisors (254010643).

1631424557 is an equidigital number, since it uses as much as digits as its factorization.

1631424557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618755.

The product of its digits is 100800, while the sum is 38.

The square root of 1631424557 is about 40390.8969571115. The cubic root of 1631424557 is about 1177.2146689275.

The spelling of 1631424557 in words is "one billion, six hundred thirty-one million, four hundred twenty-four thousand, five hundred fifty-seven".