1951432099 has 2 divisors, whose sum is σ = 1951432100. Its totient is φ = 1951432098.

The previous prime is 1951432039. The next prime is 1951432103. The reversal of 1951432099 is 9902341591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1951432099 - 2²³ = 1943043491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1951432039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975716049 + 975716050.

It is an arithmetic number, because the mean of its divisors is an integer number (975716050).

Almost surely, 2^1951432099 is an apocalyptic number.

1951432099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951432099 is an equidigital number, since it uses as much as digits as its factorization.

1951432099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 1951432099 is about 44175.0166836414. The cubic root of 1951432099 is about 1249.6387433917.

The spelling of 1951432099 in words is "one billion, nine hundred fifty-one million, four hundred thirty-two thousand, ninety-nine".