137919091 has 12 divisors (see below), whose sum is σ = 144478432. Its totient is φ = 131560416.

The previous prime is 137919083. The next prime is 137919101. The reversal of 137919091 is 190919731.

137919091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137919091 - 2³ = 137919083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137919391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103270 + ... + 104596.

Almost surely, 2^137919091 is an apocalyptic number.

137919091 is a deficient number, since it is larger than the sum of its proper divisors (6559341).

137919091 is an equidigital number, since it uses as much as digits as its factorization.

137919091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1417 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 40.

The square root of 137919091 is about 11743.8959038302. The cubic root of 137919091 is about 516.6639129001.

The spelling of 137919091 in words is "one hundred thirty-seven million, nine hundred nineteen thousand, ninety-one".