1002190100 has 36 divisors (see below), whose sum is σ = 2176373724. Its totient is φ = 400577280.

The previous prime is 1002190073. The next prime is 1002190157. The reversal of 1002190100 is 10912001.

It can be written as a sum of positive squares in 6 ways, for example, as 158055184 + 844134916 = 12572^2 + 29054^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172442 + ... + 178158.

Almost surely, 2^1002190100 is an apocalyptic number.

1002190100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002190100 is an abundant number, since it is smaller than the sum of its proper divisors (1174183624).

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

1002190100 is a wasteful number, since it uses less digits than its factorization.

1002190100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484 (or 7477 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1002190100 is about 31657.3861839540. The cubic root of 1002190100 is about 1000.7295010322.

The spelling of 1002190100 in words is "one billion, two million, one hundred ninety thousand, one hundred".