2971996155 has 24 divisors (see below), whose sum is σ = 5199612912. Its totient is φ = 1570248384.

The previous prime is 2971996141. The next prime is 2971996193. The reversal of 2971996155 is 5516991792.

2971996155 is a `hidden beast` number, since 2 + 9 + 7 + 19 + 9 + 615 + 5 = 666.

It is not a de Polignac number, because 2971996155 - 2⁶ = 2971996091 is a prime.

It is a super-2 number, since 2×2971996155² = 17665522290669568050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303804 + ... + 313433.

It is an arithmetic number, because the mean of its divisors is an integer number (216650538).

Almost surely, 2^2971996155 is an apocalyptic number.

2971996155 is a deficient number, since it is larger than the sum of its proper divisors (2227616757).

2971996155 is a wasteful number, since it uses less digits than its factorization.

2971996155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617355 (or 617352 counting only the distinct ones).

The product of its digits is 1530900, while the sum is 54.

The square root of 2971996155 is about 54516.0174169023. The cubic root of 2971996155 is about 1437.7479192312.

The spelling of 2971996155 in words is "two billion, nine hundred seventy-one million, nine hundred ninety-six thousand, one hundred fifty-five".