137820590 has 16 divisors (see below), whose sum is σ = 253847088. Its totient is φ = 53846016.

The previous prime is 137820559. The next prime is 137820593. The reversal of 137820590 is 95028731.

It is a self number, because there is not a number n which added to its sum of digits gives 137820590.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137820593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159827 + ... + 160686.

It is an arithmetic number, because the mean of its divisors is an integer number (15865443).

Almost surely, 2^137820590 is an apocalyptic number.

137820590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137820590 is a deficient number, since it is larger than the sum of its proper divisors (116026498).

137820590 is a wasteful number, since it uses less digits than its factorization.

137820590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320563.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 137820590 is about 11739.7014442447. The cubic root of 137820590 is about 516.5408841686.

The spelling of 137820590 in words is "one hundred thirty-seven million, eight hundred twenty thousand, five hundred ninety".