1361999804 has 24 divisors (see below), whose sum is σ = 2601440688. Its totient is φ = 618791040.

The previous prime is 1361999803. The next prime is 1361999813. The reversal of 1361999804 is 4089991631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361999803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102554 + ... + 115070.

It is an arithmetic number, because the mean of its divisors is an integer number (108393362).

Almost surely, 2^1361999804 is an apocalyptic number.

It is an amenable number.

1361999804 is a deficient number, since it is larger than the sum of its proper divisors (1239440884).

1361999804 is a wasteful number, since it uses less digits than its factorization.

1361999804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005 (or 15003 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1361999804 is about 36905.2815190455. The cubic root of 1361999804 is about 1108.4744359195.

The spelling of 1361999804 in words is "one billion, three hundred sixty-one million, nine hundred ninety-nine thousand, eight hundred four".