1651966748 has 6 divisors (see below), whose sum is σ = 2890941816. Its totient is φ = 825983372.

The previous prime is 1651966747. The next prime is 1651966751. The reversal of 1651966748 is 8476691561.

It is a self number, because there is not a number n which added to its sum of digits gives 1651966748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651966747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206495840 + ... + 206495847.

It is an arithmetic number, because the mean of its divisors is an integer number (481823636).

Almost surely, 2^1651966748 is an apocalyptic number.

It is an amenable number.

1651966748 is a deficient number, since it is larger than the sum of its proper divisors (1238975068).

1651966748 is a wasteful number, since it uses less digits than its factorization.

1651966748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412991691 (or 412991689 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 1651966748 is about 40644.3938077566. The cubic root of 1651966748 is about 1182.1350668248.

The spelling of 1651966748 in words is "one billion, six hundred fifty-one million, nine hundred sixty-six thousand, seven hundred forty-eight".