145894394907 has 12 divisors (see below), whose sum is σ = 211292385720. Its totient is φ = 97006297248.

The previous prime is 145894394873. The next prime is 145894394917. The reversal of 145894394907 is 709493498541.

145894394907 is a `hidden beast` number, since 1 + 4 + 58 + 94 + 3 + 9 + 490 + 7 = 666.

It is not a de Polignac number, because 145894394907 - 2²⁶ = 145827286043 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (145894394917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21382458 + ... + 21389279.

It is an arithmetic number, because the mean of its divisors is an integer number (17607698810).

Almost surely, 2^145894394907 is an apocalyptic number.

145894394907 is a deficient number, since it is larger than the sum of its proper divisors (65397990813).

145894394907 is a wasteful number, since it uses less digits than its factorization.

145894394907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42772122 (or 42772119 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 145894394907 in words is "one hundred forty-five billion, eight hundred ninety-four million, three hundred ninety-four thousand, nine hundred seven".