154890361 has 4 divisors (see below), whose sum is σ = 155033424. Its totient is φ = 154747300.

The previous prime is 154890347. The next prime is 154890371. The reversal of 154890361 is 163098451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154890361 - 2¹⁷ = 154759289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154890361.

It is not an unprimeable number, because it can be changed into a prime (154890301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69895 + ... + 72076.

It is an arithmetic number, because the mean of its divisors is an integer number (38758356).

Almost surely, 2^154890361 is an apocalyptic number.

It is an amenable number.

154890361 is a deficient number, since it is larger than the sum of its proper divisors (143063).

154890361 is a wasteful number, since it uses less digits than its factorization.

154890361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143062.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 154890361 is about 12445.4956108626. The cubic root of 154890361 is about 537.0418505206.

The spelling of 154890361 in words is "one hundred fifty-four million, eight hundred ninety thousand, three hundred sixty-one".