1631061366 has 24 divisors (see below), whose sum is σ = 3585640632. Its totient is φ = 494260800.

The previous prime is 1631061349. The next prime is 1631061389. The reversal of 1631061366 is 6631601361.

It is a super-2 number, since 2×1631061366² = 5320722359315571912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1122595 + ... + 1124046.

It is an arithmetic number, because the mean of its divisors is an integer number (149401693).

Almost surely, 2^1631061366 is an apocalyptic number.

1631061366 is an abundant number, since it is smaller than the sum of its proper divisors (1954579266).

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

1631061366 is a wasteful number, since it uses less digits than its factorization.

1631061366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246668 (or 2246657 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1631061366 is about 40386.4007556999. The cubic root of 1631061366 is about 1177.1273044822.

The spelling of 1631061366 in words is "one billion, six hundred thirty-one million, sixty-one thousand, three hundred sixty-six".