2640433154 has 16 divisors (see below), whose sum is σ = 4185730080. Its totient is φ = 1245744000.

The previous prime is 2640433127. The next prime is 2640433199. The reversal of 2640433154 is 4513340462.

It is a self number, because there is not a number n which added to its sum of digits gives 2640433154.

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, 128879 + ... + 147954.

It is an arithmetic number, because the mean of its divisors is an integer number (261608130).

Almost surely, 2^2640433154 is an apocalyptic number.

2640433154 is a deficient number, since it is larger than the sum of its proper divisors (1545296926).

2640433154 is a wasteful number, since it uses less digits than its factorization.

2640433154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277105.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 2640433154 is about 51385.1452659229. The cubic root of 2640433154 is about 1382.1602296834.

The spelling of 2640433154 in words is "two billion, six hundred forty million, four hundred thirty-three thousand, one hundred fifty-four".