1611631152 has 60 divisors (see below), whose sum is σ = 4665869520. Its totient is φ = 518684544.

The previous prime is 1611631141. The next prime is 1611631159. The reversal of 1611631152 is 2511361161.

1611631152 is a `hidden beast` number, since 1 + 6 + 11 + 631 + 15 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1611631159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188788 + ... + 197139.

It is an arithmetic number, because the mean of its divisors is an integer number (77764492).

Almost surely, 2^1611631152 is an apocalyptic number.

1611631152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1611631152 is an abundant number, since it is smaller than the sum of its proper divisors (3054238368).

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

1611631152 is a wasteful number, since it uses less digits than its factorization.

1611631152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385970 (or 385961 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 1611631152 is about 40145.1261300796. The cubic root of 1611631152 is about 1172.4343965489.

The spelling of 1611631152 in words is "one billion, six hundred eleven million, six hundred thirty-one thousand, one hundred fifty-two".