1799152991 has 2 divisors, whose sum is σ = 1799152992. Its totient is φ = 1799152990.

The previous prime is 1799152967. The next prime is 1799153047. The reversal of 1799152991 is 1992519971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1799152991 - 2²² = 1794958687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1799152291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899576495 + 899576496.

It is an arithmetic number, because the mean of its divisors is an integer number (899576496).

Almost surely, 2^1799152991 is an apocalyptic number.

1799152991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799152991 is an equidigital number, since it uses as much as digits as its factorization.

1799152991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 53.

The square root of 1799152991 is about 42416.4235998275. The cubic root of 1799152991 is about 1216.2495662221.

The spelling of 1799152991 in words is "one billion, seven hundred ninety-nine million, one hundred fifty-two thousand, nine hundred ninety-one".