1631606160 has 40 divisors (see below), whose sum is σ = 5057979840. Its totient is φ = 435094912.

The previous prime is 1631606159. The next prime is 1631606183. The reversal of 1631606160 is 616061361.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1631606160² = 5324277322699891200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398940 + ... + 3399419.

It is an arithmetic number, because the mean of its divisors is an integer number (126449496).

Almost surely, 2^1631606160 is an apocalyptic number.

1631606160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1631606160 is an abundant number, since it is smaller than the sum of its proper divisors (3426373680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631606160 is a wasteful number, since it uses less digits than its factorization.

1631606160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798375 (or 6798369 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1631606160 is about 40393.1449629761. The cubic root of 1631606160 is about 1177.2583480917.

The spelling of 1631606160 in words is "one billion, six hundred thirty-one million, six hundred six thousand, one hundred sixty".