1361202164 has 36 divisors (see below), whose sum is σ = 2799624996. Its totient is φ = 577350144.

The previous prime is 1361202151. The next prime is 1361202179. The reversal of 1361202164 is 4612021631.

It can be written as a sum of positive squares in 2 ways, for example, as 1017099664 + 344102500 = 31892^2 + 18550^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16787 + ... + 54810.

It is an arithmetic number, because the mean of its divisors is an integer number (77767361).

Almost surely, 2^1361202164 is an apocalyptic number.

1361202164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1361202164 is an abundant number, since it is smaller than the sum of its proper divisors (1438422832).

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

1361202164 is a wasteful number, since it uses less digits than its factorization.

1361202164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71712 (or 71703 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1361202164 is about 36894.4733530647. The cubic root of 1361202164 is about 1108.2580050989.

Adding to 1361202164 its reverse (4612021631), we get a palindrome (5973223795).

The spelling of 1361202164 in words is "one billion, three hundred sixty-one million, two hundred two thousand, one hundred sixty-four".