1520745207 has 32 divisors (see below), whose sum is σ = 2153840640. Its totient is φ = 952961760.

The previous prime is 1520745203. The next prime is 1520745221. The reversal of 1520745207 is 7025470251.

It is not a de Polignac number, because 1520745207 - 2² = 1520745203 is a prime.

It is a super-2 number, since 2×1520745207² = 4625331969226945698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520745203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606318 + ... + 608820.

It is an arithmetic number, because the mean of its divisors is an integer number (67307520).

Almost surely, 2^1520745207 is an apocalyptic number.

1520745207 is a deficient number, since it is larger than the sum of its proper divisors (633095433).

1520745207 is a wasteful number, since it uses less digits than its factorization.

1520745207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 1520745207 is about 38996.7332862639. The cubic root of 1520745207 is about 1149.9672850177.

The spelling of 1520745207 in words is "one billion, five hundred twenty million, seven hundred forty-five thousand, two hundred seven".