1361894499 has 64 divisors (see below), whose sum is σ = 2377589760. Its totient is φ = 754272000.

The previous prime is 1361894489. The next prime is 1361894551. The reversal of 1361894499 is 9944981631.

It is a happy number.

1361894499 is a `hidden beast` number, since 1 + 3 + 61 + 8 + 94 + 499 = 666.

It is not a de Polignac number, because 1361894499 - 2⁵ = 1361894467 is a prime.

It is a super-2 number, since 2×1361894499² = 3709513252812922002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361894489) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1402084 + ... + 1403054.

It is an arithmetic number, because the mean of its divisors is an integer number (37149840).

Almost surely, 2^1361894499 is an apocalyptic number.

1361894499 is a deficient number, since it is larger than the sum of its proper divisors (1015695261).

1361894499 is a wasteful number, since it uses less digits than its factorization.

1361894499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1203 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1361894499 is about 36903.8547986521. The cubic root of 1361894499 is about 1108.4458674110.

The spelling of 1361894499 in words is "one billion, three hundred sixty-one million, eight hundred ninety-four thousand, four hundred ninety-nine".