1101955020 has 24 divisors (see below), whose sum is σ = 3085474224. Its totient is φ = 293854656.

The previous prime is 1101954941. The next prime is 1101955033. The reversal of 1101955020 is 205591011.

It is a super-2 number, since 2×1101955020² = 2428609732206400800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9182899 + ... + 9183018.

It is an arithmetic number, because the mean of its divisors is an integer number (128561426).

Almost surely, 2^1101955020 is an apocalyptic number.

1101955020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101955020 is an abundant number, since it is smaller than the sum of its proper divisors (1983519204).

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

1101955020 is a wasteful number, since it uses less digits than its factorization.

1101955020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18365929 (or 18365927 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 1101955020 is about 33195.7078550827. The cubic root of 1101955020 is about 1032.8913075322.

The spelling of 1101955020 in words is "one billion, one hundred one million, nine hundred fifty-five thousand, twenty".