1373898081 has 4 divisors (see below), whose sum is σ = 1831864112. Its totient is φ = 915932052.

The previous prime is 1373898079. The next prime is 1373898091. The reversal of 1373898081 is 1808983731.

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.

It is not a de Polignac number, because 1373898081 - 2¹ = 1373898079 is a prime.

It is a super-2 number, since 2×1373898081² = 3775191873950965122, which contains 22 as substring.

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 1373898081.

It is not an unprimeable number, because it can be changed into a prime (1373898091) 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, 228983011 + ... + 228983016.

It is an arithmetic number, because the mean of its divisors is an integer number (457966028).

Almost surely, 2^1373898081 is an apocalyptic number.

It is an amenable number.

1373898081 is a deficient number, since it is larger than the sum of its proper divisors (457966031).

1373898081 is an equidigital number, since it uses as much as digits as its factorization.

1373898081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457966030.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1373898081 is about 37066.1311846813. The cubic root of 1373898081 is about 1111.6929179083.

The spelling of 1373898081 in words is "one billion, three hundred seventy-three million, eight hundred ninety-eight thousand, eighty-one".