137181401 has 4 divisors (see below), whose sum is σ = 156778752. Its totient is φ = 117584052.

The previous prime is 137181389. The next prime is 137181427. The reversal of 137181401 is 104181731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137181401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137181001) 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 3 ways as a sum of consecutive naturals, for example, 9798665 + ... + 9798678.

It is an arithmetic number, because the mean of its divisors is an integer number (39194688).

Almost surely, 2^137181401 is an apocalyptic number.

It is an amenable number.

137181401 is a deficient number, since it is larger than the sum of its proper divisors (19597351).

137181401 is an equidigital number, since it uses as much as digits as its factorization.

137181401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19597350.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 137181401 is about 11712.4464139649. The cubic root of 137181401 is about 515.7411028715.

The spelling of 137181401 in words is "one hundred thirty-seven million, one hundred eighty-one thousand, four hundred one".