1373511983 has 4 divisors (see below), whose sum is σ = 1378400208. Its totient is φ = 1368623760.

The previous prime is 1373511961. The next prime is 1373511989. The reversal of 1373511983 is 3891153731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1373511983 - 2¹² = 1373507887 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 1373511983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373511989) 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, 2443691 + ... + 2444252.

It is an arithmetic number, because the mean of its divisors is an integer number (344600052).

Almost surely, 2^1373511983 is an apocalyptic number.

1373511983 is a deficient number, since it is larger than the sum of its proper divisors (4888225).

1373511983 is an equidigital number, since it uses as much as digits as its factorization.

1373511983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888224.

The product of its digits is 68040, while the sum is 41.

The square root of 1373511983 is about 37060.9225870053. The cubic root of 1373511983 is about 1111.5887707784.

The spelling of 1373511983 in words is "one billion, three hundred seventy-three million, five hundred eleven thousand, nine hundred eighty-three".