1078139100 has 36 divisors (see below), whose sum is σ = 3119416664. Its totient is φ = 287503680.

The previous prime is 1078139093. The next prime is 1078139113. The reversal of 1078139100 is 19318701.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796599 + ... + 1797198.

Almost surely, 2^1078139100 is an apocalyptic number.

1078139100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1078139100 is an abundant number, since it is smaller than the sum of its proper divisors (2041277564).

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

1078139100 is a wasteful number, since it uses less digits than its factorization.

1078139100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593814 (or 3593807 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 1078139100 is about 32835.0285518377. The cubic root of 1078139100 is about 1025.3959525185.

The spelling of 1078139100 in words is "one billion, seventy-eight million, one hundred thirty-nine thousand, one hundred".