1520113634 has 16 divisors (see below), whose sum is σ = 2456895672. Its totient is φ = 701211648.

The previous prime is 1520113627. The next prime is 1520113643. The reversal of 1520113634 is 4363110251.

It can be written as a sum of positive squares in 4 ways, for example, as 1302993409 + 217120225 = 36097^2 + 14735^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36482 + ... + 66114.

Almost surely, 2^1520113634 is an apocalyptic number.

1520113634 is a deficient number, since it is larger than the sum of its proper divisors (936782038).

1520113634 is a wasteful number, since it uses less digits than its factorization.

1520113634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31621.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1520113634 is about 38988.6346773005. The cubic root of 1520113634 is about 1149.8080672755.

Adding to 1520113634 its reverse (4363110251), we get a palindrome (5883223885).

The spelling of 1520113634 in words is "one billion, five hundred twenty million, one hundred thirteen thousand, six hundred thirty-four".