137474981 has 8 divisors (see below), whose sum is σ = 157194240. Its totient is φ = 117775728.

The previous prime is 137474977. The next prime is 137474989. The reversal of 137474981 is 189474731.

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

It is not a de Polignac number, because 137474981 - 2² = 137474977 is a prime.

It is a super-2 number, since 2×137474981² = 37798740801900722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137474989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15155 + ... + 22463.

It is an arithmetic number, because the mean of its divisors is an integer number (19649280).

Almost surely, 2^137474981 is an apocalyptic number.

It is an amenable number.

137474981 is a deficient number, since it is larger than the sum of its proper divisors (19719259).

137474981 is an equidigital number, since it uses as much as digits as its factorization.

137474981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10003.

The product of its digits is 169344, while the sum is 44.

The square root of 137474981 is about 11724.9725372813. The cubic root of 137474981 is about 516.1087508399.

The spelling of 137474981 in words is "one hundred thirty-seven million, four hundred seventy-four thousand, nine hundred eighty-one".