1520730465 has 8 divisors (see below), whose sum is σ = 2433168768. Its totient is φ = 811056240.

The previous prime is 1520730457. The next prime is 1520730481. The reversal of 1520730465 is 5640370251.

1520730465 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1520730465 - 2³ = 1520730457 is a prime.

It is a super-2 number, since 2×1520730465² = 4625242294358232450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50691001 + ... + 50691030.

It is an arithmetic number, because the mean of its divisors is an integer number (304146096).

Almost surely, 2^1520730465 is an apocalyptic number.

1520730465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520730465 is a deficient number, since it is larger than the sum of its proper divisors (912438303).

1520730465 is a wasteful number, since it uses less digits than its factorization.

1520730465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101382039.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1520730465 is about 38996.5442699735. The cubic root of 1520730465 is about 1149.9635691043.

The spelling of 1520730465 in words is "one billion, five hundred twenty million, seven hundred thirty thousand, four hundred sixty-five".