1258658664 has 16 divisors (see below), whose sum is σ = 3146646720. Its totient is φ = 419552880.

The previous prime is 1258658663. The next prime is 1258658671. The reversal of 1258658664 is 4668568521.

It is not an unprimeable number, because it can be changed into a prime (1258658663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26222032 + ... + 26222079.

It is an arithmetic number, because the mean of its divisors is an integer number (196665420).

Almost surely, 2^1258658664 is an apocalyptic number.

It is an amenable number.

1258658664 is an abundant number, since it is smaller than the sum of its proper divisors (1887988056).

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

1258658664 is a wasteful number, since it uses less digits than its factorization.

1258658664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52444120 (or 52444116 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 51.

The square root of 1258658664 is about 35477.5797370677. The cubic root of 1258658664 is about 1079.6988941111.

The spelling of 1258658664 in words is "one billion, two hundred fifty-eight million, six hundred fifty-eight thousand, six hundred sixty-four".