1361851164 has 96 divisors (see below), whose sum is σ = 3748852800. Its totient is φ = 426055680.

The previous prime is 1361851159. The next prime is 1361851187. The reversal of 1361851164 is 4611581631.

It is a happy number.

1361851164 is a `hidden beast` number, since 136 + 1 + 8 + 511 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845592 + ... + 847200.

It is an arithmetic number, because the mean of its divisors is an integer number (39050550).

Almost surely, 2^1361851164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361851164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874426400).

1361851164 is an abundant number, since it is smaller than the sum of its proper divisors (2387001636).

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

1361851164 is a wasteful number, since it uses less digits than its factorization.

1361851164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2092 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1361851164 is about 36903.2676601951. The cubic root of 1361851164 is about 1108.4341105015.

The spelling of 1361851164 in words is "one billion, three hundred sixty-one million, eight hundred fifty-one thousand, one hundred sixty-four".