137956493 has 4 divisors (see below), whose sum is σ = 139009728. Its totient is φ = 136903260.

The previous prime is 137956487. The next prime is 137956501. The reversal of 137956493 is 394659731.

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 not a de Polignac number, because 137956493 - 2⁸ = 137956237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137956463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526421 + ... + 526682.

It is an arithmetic number, because the mean of its divisors is an integer number (34752432).

Almost surely, 2^137956493 is an apocalyptic number.

It is an amenable number.

137956493 is a deficient number, since it is larger than the sum of its proper divisors (1053235).

137956493 is a wasteful number, since it uses less digits than its factorization.

137956493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053234.

The product of its digits is 612360, while the sum is 47.

The square root of 137956493 is about 11745.4881976017. The cubic root of 137956493 is about 516.7106130269.

The spelling of 137956493 in words is "one hundred thirty-seven million, nine hundred fifty-six thousand, four hundred ninety-three".