1540218936 has 32 divisors (see below), whose sum is σ = 3852057600. Its totient is φ = 513204960.

The previous prime is 1540218931. The next prime is 1540218947. The reversal of 1540218936 is 6398120451.

It is a junction number, because it is equal to n+sod(n) for n = 1540218894 and 1540218903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540218931) 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, 57951 + ... + 80241.

It is an arithmetic number, because the mean of its divisors is an integer number (120376800).

Almost surely, 2^1540218936 is an apocalyptic number.

It is an amenable number.

1540218936 is an abundant number, since it is smaller than the sum of its proper divisors (2311838664).

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

1540218936 is a wasteful number, since it uses less digits than its factorization.

1540218936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25179 (or 25175 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1540218936 is about 39245.6231444985. The cubic root of 1540218936 is about 1154.8550722373.

The spelling of 1540218936 in words is "one billion, five hundred forty million, two hundred eighteen thousand, nine hundred thirty-six".