1538788964 has 24 divisors (see below), whose sum is σ = 2849551488. Its totient is φ = 725574080.

The previous prime is 1538788963. The next prime is 1538788991. The reversal of 1538788964 is 4698878351.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1538788963) 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, 111257 + ... + 124320.

It is an arithmetic number, because the mean of its divisors is an integer number (118731312).

Almost surely, 2^1538788964 is an apocalyptic number.

It is an amenable number.

1538788964 is a deficient number, since it is larger than the sum of its proper divisors (1310762524).

1538788964 is a wasteful number, since it uses less digits than its factorization.

1538788964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235675 (or 235673 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The square root of 1538788964 is about 39227.4006786073. The cubic root of 1538788964 is about 1154.4975642426.

The spelling of 1538788964 in words is "one billion, five hundred thirty-eight million, seven hundred eighty-eight thousand, nine hundred sixty-four".