137784493 has 16 divisors (see below), whose sum is σ = 172417536. Its totient is φ = 106968240.

The previous prime is 137784487. The next prime is 137784499. The reversal of 137784493 is 394487731.

137784493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (137784487) and next prime (137784499).

It is a cyclic number.

It is not a de Polignac number, because 137784493 - 2⁵ = 137784461 is a prime.

It is a super-2 number, since 2×137784493² = 37969133022534098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137784499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18630 + ... + 24952.

It is an arithmetic number, because the mean of its divisors is an integer number (10776096).

Almost surely, 2^137784493 is an apocalyptic number.

It is an amenable number.

137784493 is a deficient number, since it is larger than the sum of its proper divisors (34633043).

137784493 is a wasteful number, since it uses less digits than its factorization.

137784493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6624.

The product of its digits is 508032, while the sum is 46.

The square root of 137784493 is about 11738.1639535321. The cubic root of 137784493 is about 516.4957839786.

The spelling of 137784493 in words is "one hundred thirty-seven million, seven hundred eighty-four thousand, four hundred ninety-three".