3161154780 has 144 divisors (see below), whose sum is σ = 11059688640. Its totient is φ = 715889664.

The previous prime is 3161154757. The next prime is 3161154781. The reversal of 3161154780 is 874511613.

3161154780 is a `hidden beast` number, since 31 + 6 + 1 + 1 + 547 + 80 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161154781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125832 + ... + 148848.

Almost surely, 2^3161154780 is an apocalyptic number.

3161154780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161154780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5529844320).

3161154780 is an abundant number, since it is smaller than the sum of its proper divisors (7898533860).

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

3161154780 is a wasteful number, since it uses less digits than its factorization.

3161154780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23148 (or 23143 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 3161154780 is about 56224.1476591687. The cubic root of 3161154780 is about 1467.6255154531.

The spelling of 3161154780 in words is "three billion, one hundred sixty-one million, one hundred fifty-four thousand, seven hundred eighty".