3156921696 has 48 divisors (see below), whose sum is σ = 8510899824. Its totient is φ = 1023865344.

The previous prime is 3156921689. The next prime is 3156921697. The reversal of 3156921696 is 6961296513.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156921697) 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, 440835 + ... + 447938.

It is an arithmetic number, because the mean of its divisors is an integer number (177310413).

Almost surely, 2^3156921696 is an apocalyptic number.

It is an amenable number.

3156921696 is an abundant number, since it is smaller than the sum of its proper divisors (5353978128).

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

3156921696 is a wasteful number, since it uses less digits than its factorization.

3156921696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888823 (or 888815 counting only the distinct ones).

The product of its digits is 524880, while the sum is 48.

The square root of 3156921696 is about 56186.4903335312. The cubic root of 3156921696 is about 1466.9701265565.

The spelling of 3156921696 in words is "three billion, one hundred fifty-six million, nine hundred twenty-one thousand, six hundred ninety-six".