109191915364 has 27 divisors (see below), whose sum is σ = 222292959987. Its totient is φ = 46794552504.

The previous prime is 109191915361. The next prime is 109191915389. The reversal of 109191915364 is 463519191901.

The square root of 109191915364 is 330442.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (109191915361) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4614387 + ... + 4637989.

Almost surely, 2^109191915364 is an apocalyptic number.

109191915364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

109191915364 is the 330442-nd square number.

It is an amenable number.

109191915364 is an abundant number, since it is smaller than the sum of its proper divisors (113101044623).

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

109191915364 is an frugal number, since it uses more digits than its factorization.

109191915364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47224 (or 23612 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 49.

Multiplying 109191915364 by its sum of digits (49), we get a square (5350403852836 = 2313094²).

109191915364 divided by its sum of digits (49) gives a square (2228406436 = 47206²).

The spelling of 109191915364 in words is "one hundred nine billion, one hundred ninety-one million, nine hundred fifteen thousand, three hundred sixty-four".