3640992542 has 32 divisors (see below), whose sum is σ = 6075388800. Its totient is φ = 1622538400.

The previous prime is 3640992521. The next prime is 3640992557. The reversal of 3640992542 is 2452990463.

It is a junction number, because it is equal to n+sod(n) for n = 3640992493 and 3640992502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501317 + ... + 508527.

It is an arithmetic number, because the mean of its divisors is an integer number (189855900).

Almost surely, 2^3640992542 is an apocalyptic number.

3640992542 is a deficient number, since it is larger than the sum of its proper divisors (2434396258).

3640992542 is a wasteful number, since it uses less digits than its factorization.

3640992542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 3640992542 is about 60340.6375670659. The cubic root of 3640992542 is about 1538.4141405124.

The spelling of 3640992542 in words is "three billion, six hundred forty million, nine hundred ninety-two thousand, five hundred forty-two".