1361979560 has 16 divisors (see below), whose sum is σ = 3064454100. Its totient is φ = 544791808.

The previous prime is 1361979559. The next prime is 1361979607. The reversal of 1361979560 is 659791631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1247361124 + 114618436 = 35318^2 + 10706^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17024705 + ... + 17024784.

Almost surely, 2^1361979560 is an apocalyptic number.

1361979560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361979560 is an abundant number, since it is smaller than the sum of its proper divisors (1702474540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361979560 is a wasteful number, since it uses less digits than its factorization.

1361979560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34049500 (or 34049496 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 1361979560 is about 36905.0072483396. The cubic root of 1361979560 is about 1108.4689439785.

The spelling of 1361979560 in words is "one billion, three hundred sixty-one million, nine hundred seventy-nine thousand, five hundred sixty".