118341551 has 4 divisors (see below), whose sum is σ = 120347400. Its totient is φ = 116335704.

The previous prime is 118341533. The next prime is 118341581. The reversal of 118341551 is 155143811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155143811 = 503 ⋅308437.

It is a cyclic number.

It is not a de Polignac number, because 118341551 - 2¹⁰ = 118340527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118341511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002836 + ... + 1002953.

It is an arithmetic number, because the mean of its divisors is an integer number (30086850).

Almost surely, 2^118341551 is an apocalyptic number.

118341551 is a deficient number, since it is larger than the sum of its proper divisors (2005849).

118341551 is an equidigital number, since it uses as much as digits as its factorization.

118341551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005848.

The product of its digits is 2400, while the sum is 29.

The square root of 118341551 is about 10878.4902904769. The cubic root of 118341551 is about 490.9595953163.

The spelling of 118341551 in words is "one hundred eighteen million, three hundred forty-one thousand, five hundred fifty-one".