154390090 has 32 divisors (see below), whose sum is σ = 296607744. Its totient is φ = 57657600.

The previous prime is 154390069. The next prime is 154390091. The reversal of 154390090 is 90093451.

154390090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (154390091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18015 + ... + 25165.

It is an arithmetic number, because the mean of its divisors is an integer number (9268992).

Almost surely, 2^154390090 is an apocalyptic number.

154390090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154390090 is a deficient number, since it is larger than the sum of its proper divisors (142217654).

154390090 is a wasteful number, since it uses less digits than its factorization.

154390090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7302.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 154390090 is about 12425.3808794741. The cubic root of 154390090 is about 536.4630405980.

The spelling of 154390090 in words is "one hundred fifty-four million, three hundred ninety thousand, ninety".