118401890 has 16 divisors (see below), whose sum is σ = 213252480. Its totient is φ = 47332080.

The previous prime is 118401869. The next prime is 118401893. The reversal of 118401890 is 98104811.

It is not an unprimeable number, because it can be changed into a prime (118401893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23495 + ... + 28085.

It is an arithmetic number, because the mean of its divisors is an integer number (13328280).

Almost surely, 2^118401890 is an apocalyptic number.

118401890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118401890 is a deficient number, since it is larger than the sum of its proper divisors (94850590).

118401890 is a wasteful number, since it uses less digits than its factorization.

118401890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 118401890 is about 10881.2632538690. The cubic root of 118401890 is about 491.0430232624.

The spelling of 118401890 in words is "one hundred eighteen million, four hundred one thousand, eight hundred ninety".