616151992 has 8 divisors (see below), whose sum is σ = 1155285000. Its totient is φ = 308075992.

The previous prime is 616151989. The next prime is 616151993. The reversal of 616151992 is 299151616.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616151993) 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 as a sum of consecutive naturals, namely, 38509492 + ... + 38509507.

It is an arithmetic number, because the mean of its divisors is an integer number (144410625).

Almost surely, 2^616151992 is an apocalyptic number.

It is an amenable number.

616151992 is a deficient number, since it is larger than the sum of its proper divisors (539133008).

616151992 is a wasteful number, since it uses less digits than its factorization.

616151992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77019005 (or 77019001 counting only the distinct ones).

The product of its digits is 29160, while the sum is 40.

The square root of 616151992 is about 24822.4090692261. The cubic root of 616151992 is about 850.9341480838.

The spelling of 616151992 in words is "six hundred sixteen million, one hundred fifty-one thousand, nine hundred ninety-two".