153890465 has 4 divisors (see below), whose sum is σ = 184668564. Its totient is φ = 123112368.

The previous prime is 153890459. The next prime is 153890483. The reversal of 153890465 is 564098351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79637776 + 74252689 = 8924^2 + 8617^2 .

It is a cyclic number.

It is not a de Polignac number, because 153890465 - 2²⁰ = 152841889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15389042 + ... + 15389051.

It is an arithmetic number, because the mean of its divisors is an integer number (46167141).

Almost surely, 2^153890465 is an apocalyptic number.

It is an amenable number.

153890465 is a deficient number, since it is larger than the sum of its proper divisors (30778099).

153890465 is an equidigital number, since it uses as much as digits as its factorization.

153890465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30778098.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 153890465 is about 12405.2595700372. The cubic root of 153890465 is about 535.8837288175.

The spelling of 153890465 in words is "one hundred fifty-three million, eight hundred ninety thousand, four hundred sixty-five".