1901236020 has 24 divisors (see below), whose sum is σ = 5323461024. Its totient is φ = 506996256.

The previous prime is 1901235997. The next prime is 1901236033. The reversal of 1901236020 is 206321091.

It is a super-2 number, since 2×1901236020² = 7229396807490880800, which contains 22 as substring.

It is a congruent number.

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, 15843574 + ... + 15843693.

It is an arithmetic number, because the mean of its divisors is an integer number (221810876).

Almost surely, 2^1901236020 is an apocalyptic number.

1901236020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1901236020 is an abundant number, since it is smaller than the sum of its proper divisors (3422225004).

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

1901236020 is a wasteful number, since it uses less digits than its factorization.

1901236020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31687279 (or 31687277 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1901236020 is about 43603.1652520777. The cubic root of 1901236020 is about 1238.8308482204.

The spelling of 1901236020 in words is "one billion, nine hundred one million, two hundred thirty-six thousand, twenty".