1379820961 has 8 divisors (see below), whose sum is σ = 1411802784. Its totient is φ = 1348192800.

The previous prime is 1379820941. The next prime is 1379820973. The reversal of 1379820961 is 1690289731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1379820961 - 2¹⁹ = 1379296673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1379820941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80515 + ... + 96136.

It is an arithmetic number, because the mean of its divisors is an integer number (176475348).

Almost surely, 2^1379820961 is an apocalyptic number.

It is an amenable number.

1379820961 is a deficient number, since it is larger than the sum of its proper divisors (31981823).

1379820961 is a wasteful number, since it uses less digits than its factorization.

1379820961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176831.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1379820961 is about 37145.9413799139. The cubic root of 1379820961 is about 1113.2881319472.

The spelling of 1379820961 in words is "one billion, three hundred seventy-nine million, eight hundred twenty thousand, nine hundred sixty-one".