2658694540 has 24 divisors (see below), whose sum is σ = 5763364992. Its totient is φ = 1029171840.

The previous prime is 2658694523. The next prime is 2658694553. The reversal of 2658694540 is 454968562.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143489 + ... + 2144728.

It is an arithmetic number, because the mean of its divisors is an integer number (240140208).

Almost surely, 2^2658694540 is an apocalyptic number.

2658694540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2658694540 is an abundant number, since it is smaller than the sum of its proper divisors (3104670452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2658694540 is a wasteful number, since it uses less digits than its factorization.

2658694540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288257 (or 4288255 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

The square root of 2658694540 is about 51562.5303878698. The cubic root of 2658694540 is about 1385.3392783571.

The spelling of 2658694540 in words is "two billion, six hundred fifty-eight million, six hundred ninety-four thousand, five hundred forty".