1361842780 has 12 divisors (see below), whose sum is σ = 2859869880. Its totient is φ = 544737104.

The previous prime is 1361842777. The next prime is 1361842819. The reversal of 1361842780 is 872481631.

It is a congruent number.

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, 34046050 + ... + 34046089.

It is an arithmetic number, because the mean of its divisors is an integer number (238322490).

Almost surely, 2^1361842780 is an apocalyptic number.

1361842780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361842780 is an abundant number, since it is smaller than the sum of its proper divisors (1498027100).

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

1361842780 is a wasteful number, since it uses less digits than its factorization.

1361842780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68092148 (or 68092146 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1361842780 is about 36903.1540657435. The cubic root of 1361842780 is about 1108.4318358695.

The spelling of 1361842780 in words is "one billion, three hundred sixty-one million, eight hundred forty-two thousand, seven hundred eighty".