1611464131 has 2 divisors, whose sum is σ = 1611464132. Its totient is φ = 1611464130.

The previous prime is 1611464117. The next prime is 1611464159. The reversal of 1611464131 is 1314641161.

It is an a-pointer prime, because the next prime (1611464159) can be obtained adding 1611464131 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1611464131 - 2⁷ = 1611464003 is a prime.

It is a super-2 number, since 2×1611464131² = 5193633290999170322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1611464131.

It is not a weakly prime, because it can be changed into another prime (1611464161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805732065 + 805732066.

It is an arithmetic number, because the mean of its divisors is an integer number (805732066).

Almost surely, 2^1611464131 is an apocalyptic number.

1611464131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611464131 is an equidigital number, since it uses as much as digits as its factorization.

1611464131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 1611464131 is about 40143.0458610206. The cubic root of 1611464131 is about 1172.3938934991.

The spelling of 1611464131 in words is "one billion, six hundred eleven million, four hundred sixty-four thousand, one hundred thirty-one".