36919881 has 20 divisors (see below), whose sum is σ = 55983312. Its totient is φ = 24242328.

The previous prime is 36919879. The next prime is 36919889. The reversal of 36919881 is 18891963.

It is not a de Polignac number, because 36919881 - 2¹ = 36919879 is a prime.

It is a super-2 number, since 2×36919881² = 2726155226108322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36919889) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2026 + ... + 8828.

Almost surely, 2^36919881 is an apocalyptic number.

It is an amenable number.

36919881 is a deficient number, since it is larger than the sum of its proper divisors (19063431).

36919881 is an equidigital number, since it uses as much as digits as its factorization.

36919881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882 (or 6873 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 36919881 is about 6076.1732200457. The cubic root of 36919881 is about 332.9814939801.

The spelling of 36919881 in words is "thirty-six million, nine hundred nineteen thousand, eight hundred eighty-one".