2156637346 has 16 divisors (see below), whose sum is σ = 3259035648. Its totient is φ = 1070322400.

The previous prime is 2156637317. The next prime is 2156637359. The reversal of 2156637346 is 6437366512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140511 + ... + 155101.

It is an arithmetic number, because the mean of its divisors is an integer number (203689728).

Almost surely, 2^2156637346 is an apocalyptic number.

2156637346 is a deficient number, since it is larger than the sum of its proper divisors (1102398302).

2156637346 is a wasteful number, since it uses less digits than its factorization.

2156637346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15137.

The product of its digits is 544320, while the sum is 43.

The square root of 2156637346 is about 46439.6096667489. The cubic root of 2156637346 is about 1291.9896676192.

The spelling of 2156637346 in words is "two billion, one hundred fifty-six million, six hundred thirty-seven thousand, three hundred forty-six".