1933213881 has 16 divisors (see below), whose sum is σ = 2723860800. Its totient is φ = 1216217088.

The previous prime is 1933213873. The next prime is 1933213889. The reversal of 1933213881 is 1883123391.

It is an interprime number because it is at equal distance from previous prime (1933213873) and next prime (1933213889).

It is not a de Polignac number, because 1933213881 - 2³ = 1933213873 is a prime.

It is a super-2 number, since 2×1933213881² = 7474631819382164322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1933213889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51336 + ... + 80633.

It is an arithmetic number, because the mean of its divisors is an integer number (170241300).

Almost surely, 2^1933213881 is an apocalyptic number.

It is an amenable number.

1933213881 is a deficient number, since it is larger than the sum of its proper divisors (790646919).

1933213881 is a wasteful number, since it uses less digits than its factorization.

1933213881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132248.

The product of its digits is 31104, while the sum is 39.

The square root of 1933213881 is about 43968.3281578911. The cubic root of 1933213881 is about 1245.7377779019.

The spelling of 1933213881 in words is "one billion, nine hundred thirty-three million, two hundred thirteen thousand, eight hundred eighty-one".