1649492694 has 32 divisors (see below), whose sum is σ = 3881161440. Its totient is φ = 517487616.

The previous prime is 1649492651. The next prime is 1649492701. The reversal of 1649492694 is 4962949461.

It is a happy number.

1649492694 is a `hidden beast` number, since 1 + 6 + 494 + 92 + 69 + 4 = 666.

It is a super-2 number, since 2×1649492694² = 5441652295118755272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1649492694.

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 15 ways as a sum of consecutive naturals, for example, 897499 + ... + 899334.

It is an arithmetic number, because the mean of its divisors is an integer number (121286295).

Almost surely, 2^1649492694 is an apocalyptic number.

1649492694 is an abundant number, since it is smaller than the sum of its proper divisors (2231668746).

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

1649492694 is a wasteful number, since it uses less digits than its factorization.

1649492694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796861 (or 1796855 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 1649492694 is about 40613.9470379327. The cubic root of 1649492694 is about 1181.5446337862.

The spelling of 1649492694 in words is "one billion, six hundred forty-nine million, four hundred ninety-two thousand, six hundred ninety-four".