1117801920 has 112 divisors (see below), whose sum is σ = 3735872640. Its totient is φ = 282387456.

The previous prime is 1117801903. The next prime is 1117801933. The reversal of 1117801920 is 291087111.

It is a super-2 number, since 2×1117801920² = 2498962264711372800, which contains 22 as substring.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12402 + ... + 48881.

Almost surely, 2^1117801920 is an apocalyptic number.

1117801920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1117801920 is an abundant number, since it is smaller than the sum of its proper divisors (2618070720).

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

1117801920 is a wasteful number, since it uses less digits than its factorization.

1117801920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61322 (or 61312 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 1117801920 is about 33433.5448315012. The cubic root of 1117801920 is about 1037.8189994058.

The spelling of 1117801920 in words is "one billion, one hundred seventeen million, eight hundred one thousand, nine hundred twenty".