137949156 has 72 divisors (see below), whose sum is σ = 363548640. Its totient is φ = 45738432.

The previous prime is 137949151. The next prime is 137949191. The reversal of 137949156 is 651949731.

It is a super-2 number, since 2×137949156² = 38059939282224672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137949151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337080 + ... + 337488.

Almost surely, 2^137949156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137949156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181774320).

137949156 is an abundant number, since it is smaller than the sum of its proper divisors (225599484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137949156 is a wasteful number, since it uses less digits than its factorization.

137949156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 761 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 137949156 is about 11745.1758607524. The cubic root of 137949156 is about 516.7014527163.

The spelling of 137949156 in words is "one hundred thirty-seven million, nine hundred forty-nine thousand, one hundred fifty-six".