145634899 has 2 divisors, whose sum is σ = 145634900. Its totient is φ = 145634898.

The previous prime is 145634861. The next prime is 145634941. The reversal of 145634899 is 998436541.

It is a happy number.

145634899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (998436541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145634899 - 2¹³ = 145626707 is a prime.

It is not a weakly prime, because it can be changed into another prime (145634809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72817449 + 72817450.

It is an arithmetic number, because the mean of its divisors is an integer number (72817450).

Almost surely, 2^145634899 is an apocalyptic number.

145634899 is a deficient number, since it is larger than the sum of its proper divisors (1).

145634899 is an equidigital number, since it uses as much as digits as its factorization.

145634899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The square root of 145634899 is about 12067.9285297851. The cubic root of 145634899 is about 526.1244518951.

The spelling of 145634899 in words is "one hundred forty-five million, six hundred thirty-four thousand, eight hundred ninety-nine".