2156294090 has 16 divisors (see below), whose sum is σ = 3883170888. Its totient is φ = 862108416.

The previous prime is 2156294081. The next prime is 2156294117. The reversal of 2156294090 is 904926512.

It can be written as a sum of positive squares in 4 ways, for example, as 1670929129 + 485364961 = 40877^2 + 22031^2 .

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, 28547 + ... + 71606.

Almost surely, 2^2156294090 is an apocalyptic number.

2156294090 is a deficient number, since it is larger than the sum of its proper divisors (1726876798).

2156294090 is a wasteful number, since it uses less digits than its factorization.

2156294090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102313.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2156294090 is about 46435.9137952512. The cubic root of 2156294090 is about 1291.9211185055.

The spelling of 2156294090 in words is "two billion, one hundred fifty-six million, two hundred ninety-four thousand, ninety".