1261853160 has 32 divisors (see below), whose sum is σ = 3785559840. Its totient is φ = 336494144.

The previous prime is 1261853149. The next prime is 1261853167. The reversal of 1261853160 is 613581621.

1261853160 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1261853167) 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, 5257602 + ... + 5257841.

It is an arithmetic number, because the mean of its divisors is an integer number (118298745).

Almost surely, 2^1261853160 is an apocalyptic number.

1261853160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261853160 is an abundant number, since it is smaller than the sum of its proper divisors (2523706680).

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

1261853160 is a wasteful number, since it uses less digits than its factorization.

1261853160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515457 (or 10515453 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1261853160 is about 35522.5725419767. The cubic root of 1261853160 is about 1080.6115535033.

The spelling of 1261853160 in words is "one billion, two hundred sixty-one million, eight hundred fifty-three thousand, one hundred sixty".