1840151899 has 2 divisors, whose sum is σ = 1840151900. Its totient is φ = 1840151898.

The previous prime is 1840151897. The next prime is 1840151903. The reversal of 1840151899 is 9981510481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1840151899 - 2¹ = 1840151897 is a prime.

It is a super-2 number, since 2×1840151899² = 6772318022786612402, which contains 22 as substring.

Together with 1840151897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1840151897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920075949 + 920075950.

It is an arithmetic number, because the mean of its divisors is an integer number (920075950).

Almost surely, 2^1840151899 is an apocalyptic number.

1840151899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840151899 is an equidigital number, since it uses as much as digits as its factorization.

1840151899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 46.

The square root of 1840151899 is about 42896.9917243622. The cubic root of 1840151899 is about 1225.4188541860.

The spelling of 1840151899 in words is "one billion, eight hundred forty million, one hundred fifty-one thousand, eight hundred ninety-nine".