137308649 has 8 divisors (see below), whose sum is σ = 149520000. Its totient is φ = 125595792.

The previous prime is 137308603. The next prime is 137308657. The reversal of 137308649 is 946803731.

137308649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137308649 - 2¹² = 137304553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137301649) 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, 124049 + ... + 125150.

It is an arithmetic number, because the mean of its divisors is an integer number (18690000).

Almost surely, 2^137308649 is an apocalyptic number.

137308649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

137308649 is a deficient number, since it is larger than the sum of its proper divisors (12211351).

137308649 is a wasteful number, since it uses less digits than its factorization.

137308649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249247.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 137308649 is about 11717.8773248400. The cubic root of 137308649 is about 515.9005189006.

The spelling of 137308649 in words is "one hundred thirty-seven million, three hundred eight thousand, six hundred forty-nine".