1373890633 has 4 divisors (see below), whose sum is σ = 1377850320. Its totient is φ = 1369930948.

The previous prime is 1373890621. The next prime is 1373890657. The reversal of 1373890633 is 3360983731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3360983731 = 7 ⋅480140533.

It is a cyclic number.

It is not a de Polignac number, because 1373890633 - 2⁹ = 1373890121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1373890633.

It is not an unprimeable number, because it can be changed into a prime (1373890603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979323 + ... + 1980016.

It is an arithmetic number, because the mean of its divisors is an integer number (344462580).

Almost surely, 2^1373890633 is an apocalyptic number.

It is an amenable number.

1373890633 is a deficient number, since it is larger than the sum of its proper divisors (3959687).

1373890633 is an equidigital number, since it uses as much as digits as its factorization.

1373890633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959686.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 1373890633 is about 37066.0307154678. The cubic root of 1373890633 is about 1111.6909090490.

The spelling of 1373890633 in words is "one billion, three hundred seventy-three million, eight hundred ninety thousand, six hundred thirty-three".