2791538155 has 8 divisors (see below), whose sum is σ = 3828395232. Its totient is φ = 1914197568.

The previous prime is 2791538147. The next prime is 2791538161. The reversal of 2791538155 is 5518351972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2791538155 - 2³ = 2791538147 is a prime.

It is a Duffinian number.

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, 39879082 + ... + 39879151.

It is an arithmetic number, because the mean of its divisors is an integer number (478549404).

Almost surely, 2^2791538155 is an apocalyptic number.

2791538155 is a deficient number, since it is larger than the sum of its proper divisors (1036857077).

2791538155 is an equidigital number, since it uses as much as digits as its factorization.

2791538155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79758245.

The product of its digits is 378000, while the sum is 46.

The square root of 2791538155 is about 52835.0088009835. The cubic root of 2791538155 is about 1408.0384768225.

The spelling of 2791538155 in words is "two billion, seven hundred ninety-one million, five hundred thirty-eight thousand, one hundred fifty-five".