2949620831 has 4 divisors (see below), whose sum is σ = 2965064064. Its totient is φ = 2934177600.

The previous prime is 2949620813. The next prime is 2949620851. The reversal of 2949620831 is 1380269492.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2949620831 is a prime.

It is a super-2 number, since 2×2949620831² = 17400526093338261122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2949620801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7721330 + ... + 7721711.

It is an arithmetic number, because the mean of its divisors is an integer number (741266016).

Almost surely, 2^2949620831 is an apocalyptic number.

2949620831 is a deficient number, since it is larger than the sum of its proper divisors (15443233).

2949620831 is a wasteful number, since it uses less digits than its factorization.

2949620831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15443232.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 2949620831 is about 54310.4118102597. The cubic root of 2949620831 is about 1434.1306929210.

The spelling of 2949620831 in words is "two billion, nine hundred forty-nine million, six hundred twenty thousand, eight hundred thirty-one".