1616131992 has 32 divisors (see below), whose sum is σ = 4045812480. Its totient is φ = 537979680.

The previous prime is 1616131921. The next prime is 1616131997. The reversal of 1616131992 is 2991316161.

It is a super-2 number, since 2×1616131992² = 5223765231131776128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616131992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616131997) 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 7 ways as a sum of consecutive naturals, for example, 27484 + ... + 63147.

It is an arithmetic number, because the mean of its divisors is an integer number (126431640).

Almost surely, 2^1616131992 is an apocalyptic number.

1616131992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1616131992 is an abundant number, since it is smaller than the sum of its proper divisors (2429680488).

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

1616131992 is a wasteful number, since it uses less digits than its factorization.

1616131992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91383 (or 91379 counting only the distinct ones).

The product of its digits is 17496, while the sum is 39.

The square root of 1616131992 is about 40201.1441628220. The cubic root of 1616131992 is about 1173.5248104206.

The spelling of 1616131992 in words is "one billion, six hundred sixteen million, one hundred thirty-one thousand, nine hundred ninety-two".