1520151964 has 12 divisors (see below), whose sum is σ = 2703877288. Its totient is φ = 747615600.

The previous prime is 1520151959. The next prime is 1520151967. The reversal of 1520151964 is 4691510251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520151967) 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, 3114822 + ... + 3115309.

Almost surely, 2^1520151964 is an apocalyptic number.

It is an amenable number.

1520151964 is a deficient number, since it is larger than the sum of its proper divisors (1183725324).

1520151964 is a wasteful number, since it uses less digits than its factorization.

1520151964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230196 (or 6230194 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 1520151964 is about 38989.1262277061. The cubic root of 1520151964 is about 1149.8177314154.

The spelling of 1520151964 in words is "one billion, five hundred twenty million, one hundred fifty-one thousand, nine hundred sixty-four".