1881855162 has 36 divisors (see below), whose sum is σ = 4481723610. Its totient is φ = 570258480.

The previous prime is 1881855161. The next prime is 1881855163. The reversal of 1881855162 is 2615581881.

1881855162 is a `hidden beast` number, since 1 + 88 + 18 + 551 + 6 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1881855161) and next prime (1881855163).

It can be written as a sum of positive squares in only one way, i.e., 1162059921 + 719795241 = 34089^2 + 26829^2 .

It is not an unprimeable number, because it can be changed into a prime (1881855161) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 429837 + ... + 434192.

Almost surely, 2^1881855162 is an apocalyptic number.

1881855162 is an abundant number, since it is smaller than the sum of its proper divisors (2599868448).

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

1881855162 is a wasteful number, since it uses less digits than its factorization.

1881855162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864059 (or 864045 counting only the distinct ones).

The product of its digits is 153600, while the sum is 45.

The square root of 1881855162 is about 43380.3545628664. The cubic root of 1881855162 is about 1234.6069901815.

The spelling of 1881855162 in words is "one billion, eight hundred eighty-one million, eight hundred fifty-five thousand, one hundred sixty-two".