1631402654 has 32 divisors (see below), whose sum is σ = 2963563200. Its totient is φ = 657520128.

The previous prime is 1631402609. The next prime is 1631402657. The reversal of 1631402654 is 4562041361.

It is a super-2 number, since 2×1631402654² = 5322949238956487432, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1631402654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631402657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462104 + ... + 465620.

It is an arithmetic number, because the mean of its divisors is an integer number (92611350).

Almost surely, 2^1631402654 is an apocalyptic number.

1631402654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1631402654 is a deficient number, since it is larger than the sum of its proper divisors (1332160546).

1631402654 is a wasteful number, since it uses less digits than its factorization.

1631402654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1631402654 is about 40390.6258183752. The cubic root of 1631402654 is about 1177.2094005976.

The spelling of 1631402654 in words is "one billion, six hundred thirty-one million, four hundred two thousand, six hundred fifty-four".