1373820100 has 36 divisors (see below), whose sum is σ = 3007596564. Its totient is φ = 544660480.

The previous prime is 1373820089. The next prime is 1373820113. The reversal of 1373820100 is 10283731.

It can be written as a sum of positive squares in 6 ways, for example, as 443692096 + 930128004 = 21064^2 + 30498^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 49489 + ... + 72088.

It is an arithmetic number, because the mean of its divisors is an integer number (83544349).

Almost surely, 2^1373820100 is an apocalyptic number.

1373820100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373820100 is an abundant number, since it is smaller than the sum of its proper divisors (1633776464).

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

1373820100 is a wasteful number, since it uses less digits than its factorization.

1373820100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121704 (or 121697 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1373820100 is about 37065.0792525795. The cubic root of 1373820100 is about 1111.6718846728.

The spelling of 1373820100 in words is "one billion, three hundred seventy-three million, eight hundred twenty thousand, one hundred".