1631400454 has 8 divisors (see below), whose sum is σ = 2449226520. Its totient is φ = 814991616.

The previous prime is 1631400413. The next prime is 1631400457. The reversal of 1631400454 is 4540041361.

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

It is a super-2 number, since 2×1631400454² = 5322934882622812232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631400457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351424 + ... + 356035.

It is an arithmetic number, because the mean of its divisors is an integer number (306153315).

Almost surely, 2^1631400454 is an apocalyptic number.

1631400454 is a deficient number, since it is larger than the sum of its proper divisors (817826066).

1631400454 is a wasteful number, since it uses less digits than its factorization.

1631400454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708614.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1631400454 is about 40390.5985843241. The cubic root of 1631400454 is about 1177.2088714289.

The spelling of 1631400454 in words is "one billion, six hundred thirty-one million, four hundred thousand, four hundred fifty-four".