1361969860 has 24 divisors (see below), whose sum is σ = 2861643456. Its totient is φ = 544500960.

The previous prime is 1361969839. The next prime is 1361969867. The reversal of 1361969860 is 689691631.

It is not an unprimeable number, because it can be changed into a prime (1361969867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23289 + ... + 57151.

It is an arithmetic number, because the mean of its divisors is an integer number (119235144).

Almost surely, 2^1361969860 is an apocalyptic number.

1361969860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361969860 is an abundant number, since it is smaller than the sum of its proper divisors (1499673596).

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

1361969860 is a wasteful number, since it uses less digits than its factorization.

1361969860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35883 (or 35881 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 1361969860 is about 36904.8758296245. The cubic root of 1361969860 is about 1108.4663124720.

The spelling of 1361969860 in words is "one billion, three hundred sixty-one million, nine hundred sixty-nine thousand, eight hundred sixty".