1640076244 has 12 divisors (see below), whose sum is σ = 2936881024. Its totient is φ = 800967384.

The previous prime is 1640076209. The next prime is 1640076259. The reversal of 1640076244 is 4426700461.

It is a super-2 number, since 2×1640076244² = 5379700172266295072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4767492 + ... + 4767835.

Almost surely, 2^1640076244 is an apocalyptic number.

It is an amenable number.

1640076244 is a deficient number, since it is larger than the sum of its proper divisors (1296804780).

1640076244 is a wasteful number, since it uses less digits than its factorization.

1640076244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9535374 (or 9535372 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 1640076244 is about 40497.8548073846. The cubic root of 1640076244 is about 1179.2919826183.

The spelling of 1640076244 in words is "one billion, six hundred forty million, seventy-six thousand, two hundred forty-four".