1611607671 has 10 divisors (see below), whose sum is σ = 2407463432. Its totient is φ = 1074405060.

The previous prime is 1611607637. The next prime is 1611607693. The reversal of 1611607671 is 1767061161.

It is not a de Polignac number, because 1611607671 - 2¹⁴ = 1611591287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611607471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9948115 + ... + 9948276.

Almost surely, 2^1611607671 is an apocalyptic number.

1611607671 is a deficient number, since it is larger than the sum of its proper divisors (795855761).

1611607671 is an equidigital number, since it uses as much as digits as its factorization.

1611607671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896403 (or 19896394 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1611607671 is about 40144.8336775730. The cubic root of 1611607671 is about 1172.4287025111.

The spelling of 1611607671 in words is "one billion, six hundred eleven million, six hundred seven thousand, six hundred seventy-one".