1099604100 has 432 divisors, whose sum is σ = 4053073920. Its totient is φ = 228614400.

The previous prime is 1099604087. The next prime is 1099604101. The reversal of 1099604100 is 14069901.

1099604100 = T₃₆₁ + T₃₆₂ + ... + T₁₈₇₉.

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

It is not an unprimeable number, because it can be changed into a prime (1099604101) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8658237 + ... + 8658363.

Almost surely, 2^1099604100 is an apocalyptic number.

1099604100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099604100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026536960).

1099604100 is an abundant number, since it is smaller than the sum of its proper divisors (2953469820).

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

1099604100 is a wasteful number, since it uses less digits than its factorization.

1099604100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1099604100 is about 33160.2789493695. The cubic root of 1099604100 is about 1032.1562582634.

The spelling of 1099604100 in words is "one billion, ninety-nine million, six hundred four thousand, one hundred".