1373890077 has 18 divisors (see below), whose sum is σ = 2308509918. Its totient is φ = 785079792.

The previous prime is 1373890061. The next prime is 1373890079. The reversal of 1373890077 is 7700983731.

It can be written as a sum of positive squares in only one way, i.e., 1364489721 + 9400356 = 36939^2 + 3066^2 .

It is not a de Polignac number, because 1373890077 - 2⁴ = 1373890061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373890079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1557258 + ... + 1558139.

It is an arithmetic number, because the mean of its divisors is an integer number (128250551).

Almost surely, 2^1373890077 is an apocalyptic number.

It is an amenable number.

1373890077 is a deficient number, since it is larger than the sum of its proper divisors (934619841).

1373890077 is a wasteful number, since it uses less digits than its factorization.

1373890077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115417 (or 3115407 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 1373890077 is about 37066.0232153383. The cubic root of 1373890077 is about 1111.6907590856.

The spelling of 1373890077 in words is "one billion, three hundred seventy-three million, eight hundred ninety thousand, seventy-seven".