139918570749 has 32 divisors (see below), whose sum is σ = 215691517440. Its totient is φ = 89571807936.

The previous prime is 139918570739. The next prime is 139918570777. The reversal of 139918570749 is 947075819931.

139918570749 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 18 + 570 + 7 + 49 = 666.

It is not a de Polignac number, because 139918570749 - 2⁵ = 139918570717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139918570709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 972922 + ... + 1107435.

It is an arithmetic number, because the mean of its divisors is an integer number (6740359920).

Almost surely, 2^139918570749 is an apocalyptic number.

It is an amenable number.

139918570749 is a deficient number, since it is larger than the sum of its proper divisors (75772946691).

139918570749 is a wasteful number, since it uses less digits than its factorization.

139918570749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080466 (or 2080460 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 63.

The spelling of 139918570749 in words is "one hundred thirty-nine billion, nine hundred eighteen million, five hundred seventy thousand, seven hundred forty-nine".