118261619 has 16 divisors (see below), whose sum is σ = 137077248. Its totient is φ = 99937152.

The previous prime is 118261609. The next prime is 118261669. The reversal of 118261619 is 916162811.

It is not a de Polignac number, because 118261619 - 2²⁴ = 101484403 is a prime.

It is a super-2 number, since 2×118261619² = 27971621057002322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118261609) 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, 242594 + ... + 243080.

It is an arithmetic number, because the mean of its divisors is an integer number (8567328).

Almost surely, 2^118261619 is an apocalyptic number.

118261619 is a deficient number, since it is larger than the sum of its proper divisors (18815629).

118261619 is a wasteful number, since it uses less digits than its factorization.

118261619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its digits is 5184, while the sum is 35.

The square root of 118261619 is about 10874.8158145322. The cubic root of 118261619 is about 490.8490333573.

It can be divided in two parts, 11 and 8261619, that multiplied together give a palindrome (90877809).

The spelling of 118261619 in words is "one hundred eighteen million, two hundred sixty-one thousand, six hundred nineteen".