1369778090 has 32 divisors (see below), whose sum is σ = 2567725056. Its totient is φ = 525530880.

The previous prime is 1369778063. The next prime is 1369778099. The reversal of 1369778090 is 908779631.

It is not an unprimeable number, because it can be changed into a prime (1369778099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15479 + ... + 54581.

It is an arithmetic number, because the mean of its divisors is an integer number (80241408).

Almost surely, 2^1369778090 is an apocalyptic number.

1369778090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1369778090 is a deficient number, since it is larger than the sum of its proper divisors (1197946966).

1369778090 is a wasteful number, since it uses less digits than its factorization.

1369778090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39254.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 1369778090 is about 37010.5132361063. The cubic root of 1369778090 is about 1110.5805717563.

The spelling of 1369778090 in words is "one billion, three hundred sixty-nine million, seven hundred seventy-eight thousand, ninety".