2651991530 has 16 divisors (see below), whose sum is σ = 4776330240. Its totient is φ = 1060186512.

The previous prime is 2651991509. The next prime is 2651991533. The reversal of 2651991530 is 351991562.

It is a happy number.

2651991530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2651991533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57794 + ... + 92973.

It is an arithmetic number, because the mean of its divisors is an integer number (298520640).

Almost surely, 2^2651991530 is an apocalyptic number.

2651991530 is a deficient number, since it is larger than the sum of its proper divisors (2124338710).

2651991530 is a wasteful number, since it uses less digits than its factorization.

2651991530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152533.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 2651991530 is about 51497.4905213837. The cubic root of 2651991530 is about 1384.1740752037.

The spelling of 2651991530 in words is "two billion, six hundred fifty-one million, nine hundred ninety-one thousand, five hundred thirty".