2156909103 has 24 divisors (see below), whose sum is σ = 3246137856. Its totient is φ = 1378530000.

The previous prime is 2156909081. The next prime is 2156909107. The reversal of 2156909103 is 3019096512.

2156909103 is a `hidden beast` number, since 2 + 1 + 569 + 0 + 91 + 0 + 3 = 666.

It is not a de Polignac number, because 2156909103 - 2⁶ = 2156909039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156909107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6273 + ... + 65978.

It is an arithmetic number, because the mean of its divisors is an integer number (135255744).

Almost surely, 2^2156909103 is an apocalyptic number.

2156909103 is a deficient number, since it is larger than the sum of its proper divisors (1089228753).

2156909103 is a wasteful number, since it uses less digits than its factorization.

2156909103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72395 (or 72392 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 2156909103 is about 46442.5354928001. The cubic root of 2156909103 is about 1292.0439330385.

The spelling of 2156909103 in words is "two billion, one hundred fifty-six million, nine hundred nine thousand, one hundred three".