1020191604 has 48 divisors (see below), whose sum is σ = 2409422400. Its totient is φ = 335943936.

The previous prime is 1020191593. The next prime is 1020191629. The reversal of 1020191604 is 4061910201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534019 + ... + 535925.

It is an arithmetic number, because the mean of its divisors is an integer number (50196300).

Almost surely, 2^1020191604 is an apocalyptic number.

It is an amenable number.

1020191604 is an abundant number, since it is smaller than the sum of its proper divisors (1389230796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020191604 is a wasteful number, since it uses less digits than its factorization.

1020191604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432 (or 2430 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1020191604 is about 31940.4383814625. The cubic root of 1020191604 is about 1006.6857359856.

The spelling of 1020191604 in words is "one billion, twenty million, one hundred ninety-one thousand, six hundred four".