1664792050 has 12 divisors (see below), whose sum is σ = 3096513306. Its totient is φ = 665916800.

The previous prime is 1664792033. The next prime is 1664792057. The reversal of 1664792050 is 502974661.

It can be written as a sum of positive squares in 3 ways, for example, as 676884289 + 987907761 = 26017^2 + 31431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1664791994 and 1664792012.

It is not an unprimeable number, because it can be changed into a prime (1664792057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16647871 + ... + 16647970.

Almost surely, 2^1664792050 is an apocalyptic number.

1664792050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664792050 is a deficient number, since it is larger than the sum of its proper divisors (1431721256).

1664792050 is a wasteful number, since it uses less digits than its factorization.

1664792050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33295853 (or 33295848 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1664792050 is about 40801.8633152948. The cubic root of 1664792050 is about 1185.1864139666.

The spelling of 1664792050 in words is "one billion, six hundred sixty-four million, seven hundred ninety-two thousand, fifty".