2156338426 has 16 divisors (see below), whose sum is σ = 3533790240. Its totient is φ = 978699280.

The previous prime is 2156338411. The next prime is 2156338439. The reversal of 2156338426 is 6248336512.

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, 57496 + ... + 87283.

It is an arithmetic number, because the mean of its divisors is an integer number (220861890).

Almost surely, 2^2156338426 is an apocalyptic number.

2156338426 is a deficient number, since it is larger than the sum of its proper divisors (1377451814).

2156338426 is a wasteful number, since it uses less digits than its factorization.

2156338426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145469.

The product of its digits is 207360, while the sum is 40.

The square root of 2156338426 is about 46436.3911819168. The cubic root of 2156338426 is about 1291.9299729288.

The spelling of 2156338426 in words is "two billion, one hundred fifty-six million, three hundred thirty-eight thousand, four hundred twenty-six".