118739457 has 12 divisors (see below), whose sum is σ = 171689700. Its totient is φ = 79077888.

The previous prime is 118739443. The next prime is 118739459. The reversal of 118739457 is 754937811.

It can be written as a sum of positive squares in 2 ways, for example, as 108493056 + 10246401 = 10416^2 + 3201^2 .

It is not a de Polignac number, because 118739457 - 2¹⁵ = 118706689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118739459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3153 + ... + 15729.

It is an arithmetic number, because the mean of its divisors is an integer number (14307475).

Almost surely, 2^118739457 is an apocalyptic number.

It is an amenable number.

118739457 is a deficient number, since it is larger than the sum of its proper divisors (52950243).

118739457 is a wasteful number, since it uses less digits than its factorization.

118739457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13632 (or 13629 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 118739457 is about 10896.7636020976. The cubic root of 118739457 is about 491.5092394706.

The spelling of 118739457 in words is "one hundred eighteen million, seven hundred thirty-nine thousand, four hundred fifty-seven".