945193987 has 2 divisors, whose sum is σ = 945193988. Its totient is φ = 945193986.

The previous prime is 945193943. The next prime is 945194021. The reversal of 945193987 is 789391549.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 945193987 - 2²³ = 936805379 is a prime.

It is not a weakly prime, because it can be changed into another prime (945197987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472596993 + 472596994.

It is an arithmetic number, because the mean of its divisors is an integer number (472596994).

Almost surely, 2^945193987 is an apocalyptic number.

945193987 is a deficient number, since it is larger than the sum of its proper divisors (1).

945193987 is an equidigital number, since it uses as much as digits as its factorization.

945193987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 55.

The square root of 945193987 is about 30744.0073347636. The cubic root of 945193987 is about 981.3870360117.

The spelling of 945193987 in words is "nine hundred forty-five million, one hundred ninety-three thousand, nine hundred eighty-seven".