1620034402 has 16 divisors (see below), whose sum is σ = 2777731200. Its totient is φ = 694168128.

The previous prime is 1620034393. The next prime is 1620034439. The reversal of 1620034402 is 2044300261.

It is a happy number.

It is a super-2 number, since 2×1620034402² = 5249022927326995208, which contains 22 as substring.

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, 113658 + ... + 127114.

It is an arithmetic number, because the mean of its divisors is an integer number (173608200).

Almost surely, 2^1620034402 is an apocalyptic number.

1620034402 is a deficient number, since it is larger than the sum of its proper divisors (1157696798).

1620034402 is a wasteful number, since it uses less digits than its factorization.

1620034402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22065.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1620034402 is about 40249.6509550083. The cubic root of 1620034402 is about 1174.4686058274.

Adding to 1620034402 its reverse (2044300261), we get a palindrome (3664334663).

The spelling of 1620034402 in words is "one billion, six hundred twenty million, thirty-four thousand, four hundred two".