2651864031 has 18 divisors (see below), whose sum is σ = 3955316768. Its totient is φ = 1710325080.

The previous prime is 2651864003. The next prime is 2651864071. The reversal of 2651864031 is 1304681562.

It is a happy number.

2651864031 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 8 + 640 + 3 + 1 = 666.

It is not a de Polignac number, because 2651864031 - 2⁶ = 2651863967 is a prime.

It is a super-2 number, since 2×2651864031² = 14064765677823137922, 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 (2651864071) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 858616 + ... + 861698.

Almost surely, 2^2651864031 is an apocalyptic number.

2651864031 is a deficient number, since it is larger than the sum of its proper divisors (1303452737).

2651864031 is an frugal number, since it uses more digits than its factorization.

2651864031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203 (or 3117 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2651864031 is about 51496.2525918149. The cubic root of 2651864031 is about 1384.1518926745.

The spelling of 2651864031 in words is "two billion, six hundred fifty-one million, eight hundred sixty-four thousand, thirty-one".