1540612764 has 24 divisors (see below), whose sum is σ = 3994181520. Its totient is φ = 513537552.

The previous prime is 1540612763. The next prime is 1540612789. The reversal of 1540612764 is 4672160451.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540612763) 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, 7132359 + ... + 7132574.

It is an arithmetic number, because the mean of its divisors is an integer number (166424230).

Almost surely, 2^1540612764 is an apocalyptic number.

It is an amenable number.

1540612764 is an abundant number, since it is smaller than the sum of its proper divisors (2453568756).

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

1540612764 is a wasteful number, since it uses less digits than its factorization.

1540612764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14264946 (or 14264938 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1540612764 is about 39250.6403005097. The cubic root of 1540612764 is about 1154.9534945013.

The spelling of 1540612764 in words is "one billion, five hundred forty million, six hundred twelve thousand, seven hundred sixty-four".