1520426630 has 16 divisors (see below), whose sum is σ = 2743668720. Its totient is φ = 606637152.

The previous prime is 1520426599. The next prime is 1520426689. The reversal of 1520426630 is 366240251.

It is a junction number, because it is equal to n+sod(n) for n = 1520426593 and 1520426602.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 187520 + ... + 195459.

It is an arithmetic number, because the mean of its divisors is an integer number (171479295).

Almost surely, 2^1520426630 is an apocalyptic number.

1520426630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520426630 is a deficient number, since it is larger than the sum of its proper divisors (1223242090).

1520426630 is a wasteful number, since it uses less digits than its factorization.

1520426630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383383.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1520426630 is about 38992.6484096682. The cubic root of 1520426630 is about 1149.8869781806.

Adding to 1520426630 its reverse (366240251), we get a palindrome (1886666881).

The spelling of 1520426630 in words is "one billion, five hundred twenty million, four hundred twenty-six thousand, six hundred thirty".