2153640426 has 32 divisors (see below), whose sum is σ = 5055653760. Its totient is φ = 598694976.

The previous prime is 2153640413. The next prime is 2153640449. The reversal of 2153640426 is 6240463512.

2153640426 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2153640426² = 9276334169002922952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691381 + ... + 694488.

It is an arithmetic number, because the mean of its divisors is an integer number (157989180).

Almost surely, 2^2153640426 is an apocalyptic number.

2153640426 is an abundant number, since it is smaller than the sum of its proper divisors (2902013334).

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

2153640426 is a wasteful number, since it uses less digits than its factorization.

2153640426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385918.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2153640426 is about 46407.3315974965. The cubic root of 2153640426 is about 1291.3909292473.

The spelling of 2153640426 in words is "two billion, one hundred fifty-three million, six hundred forty thousand, four hundred twenty-six".