2156265404 has 6 divisors (see below), whose sum is σ = 3773464464. Its totient is φ = 1078132700.

The previous prime is 2156265373. The next prime is 2156265427. The reversal of 2156265404 is 4045626512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269533172 + ... + 269533179.

It is an arithmetic number, because the mean of its divisors is an integer number (628910744).

Almost surely, 2^2156265404 is an apocalyptic number.

It is an amenable number.

2156265404 is a deficient number, since it is larger than the sum of its proper divisors (1617199060).

2156265404 is a wasteful number, since it uses less digits than its factorization.

2156265404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539066355 (or 539066353 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2156265404 is about 46435.6049169169. The cubic root of 2156265404 is about 1291.9153895075.

The spelling of 2156265404 in words is "two billion, one hundred fifty-six million, two hundred sixty-five thousand, four hundred four".