1968320156 has 12 divisors (see below), whose sum is σ = 3757702200. Its totient is φ = 894690960.

The previous prime is 1968320153. The next prime is 1968320177. The reversal of 1968320156 is 6510238691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968320153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22367231 + ... + 22367318.

It is an arithmetic number, because the mean of its divisors is an integer number (313141850).

Almost surely, 2^1968320156 is an apocalyptic number.

It is an amenable number.

1968320156 is a deficient number, since it is larger than the sum of its proper divisors (1789382044).

1968320156 is a wasteful number, since it uses less digits than its factorization.

1968320156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44734564 (or 44734562 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1968320156 is about 44365.7543156881. The cubic root of 1968320156 is about 1253.2332628782.

The spelling of 1968320156 in words is "one billion, nine hundred sixty-eight million, three hundred twenty thousand, one hundred fifty-six".