1877161881 has 16 divisors (see below), whose sum is σ = 2863396224. Its totient is φ = 1071554304.

The previous prime is 1877161843. The next prime is 1877161889. The reversal of 1877161881 is 1881617781.

It is not a de Polignac number, because 1877161881 - 2¹⁵ = 1877129113 is a prime.

It is a super-2 number, since 2×1877161881² = 7047473454958916322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1877161881.

It is not an unprimeable number, because it can be changed into a prime (1877161889) 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, 25230 + ... + 66263.

It is an arithmetic number, because the mean of its divisors is an integer number (178962264).

Almost surely, 2^1877161881 is an apocalyptic number.

It is an amenable number.

1877161881 is a deficient number, since it is larger than the sum of its proper divisors (986234343).

1877161881 is an equidigital number, since it uses as much as digits as its factorization.

1877161881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92480.

The product of its digits is 150528, while the sum is 48.

The square root of 1877161881 is about 43326.2262492362. The cubic root of 1877161881 is about 1233.5797802050.

The spelling of 1877161881 in words is "one billion, eight hundred seventy-seven million, one hundred sixty-one thousand, eight hundred eighty-one".