1361640250 has 32 divisors (see below), whose sum is σ = 2659827456. Its totient is φ = 520973200.

The previous prime is 1361640221. The next prime is 1361640251. The reversal of 1361640250 is 520461631.

It is not an unprimeable number, because it can be changed into a prime (1361640251) 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, 112654 + ... + 124153.

It is an arithmetic number, because the mean of its divisors is an integer number (83119608).

Almost surely, 2^1361640250 is an apocalyptic number.

1361640250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361640250 is a deficient number, since it is larger than the sum of its proper divisors (1298187206).

1361640250 is a wasteful number, since it uses less digits than its factorization.

1361640250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236847 (or 236837 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1361640250 is about 36900.4098893224. The cubic root of 1361640250 is about 1108.3768853685.

The spelling of 1361640250 in words is "one billion, three hundred sixty-one million, six hundred forty thousand, two hundred fifty".