1997592916 has 24 divisors (see below), whose sum is σ = 3815786016. Its totient is φ = 907473120.

The previous prime is 1997592899. The next prime is 1997592917. The reversal of 1997592916 is 6192957991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997592917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69990 + ... + 94306.

It is an arithmetic number, because the mean of its divisors is an integer number (158991084).

Almost surely, 2^1997592916 is an apocalyptic number.

It is an amenable number.

1997592916 is a deficient number, since it is larger than the sum of its proper divisors (1818193100).

1997592916 is a wasteful number, since it uses less digits than its factorization.

1997592916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26199 (or 26197 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 58.

The square root of 1997592916 is about 44694.4394304258. The cubic root of 1997592916 is about 1259.4153910133.

The spelling of 1997592916 in words is "one billion, nine hundred ninety-seven million, five hundred ninety-two thousand, nine hundred sixteen".