1369496881 has 4 divisors (see below), whose sum is σ = 1369576512. Its totient is φ = 1369417252.

The previous prime is 1369496879. The next prime is 1369496911. The reversal of 1369496881 is 1886949631.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1369496881 - 2¹ = 1369496879 is a prime.

It is a super-2 number, since 2×1369496881² = 3751043414137456322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1369496831) 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, 2125 + ... + 52378.

It is an arithmetic number, because the mean of its divisors is an integer number (342394128).

Almost surely, 2^1369496881 is an apocalyptic number.

It is an amenable number.

1369496881 is a deficient number, since it is larger than the sum of its proper divisors (79631).

1369496881 is an equidigital number, since it uses as much as digits as its factorization.

1369496881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79630.

The product of its digits is 2239488, while the sum is 55.

The square root of 1369496881 is about 37006.7139989489. The cubic root of 1369496881 is about 1110.5045675654.

The spelling of 1369496881 in words is "one billion, three hundred sixty-nine million, four hundred ninety-six thousand, eight hundred eighty-one".