145890361 has 8 divisors (see below), whose sum is σ = 147313664. Its totient is φ = 144471600.

The previous prime is 145890347. The next prime is 145890383. The reversal of 145890361 is 163098541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145890361 - 2⁷ = 145890233 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 145890361.

It is not an unprimeable number, because it can be changed into a prime (145897361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132931 + ... + 134023.

It is an arithmetic number, because the mean of its divisors is an integer number (18414208).

Almost surely, 2^145890361 is an apocalyptic number.

It is an amenable number.

145890361 is a deficient number, since it is larger than the sum of its proper divisors (1423303).

145890361 is a wasteful number, since it uses less digits than its factorization.

145890361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

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

The square root of 145890361 is about 12078.5082274261. The cubic root of 145890361 is about 526.4319017680.

It can be divided in two parts, 1458 and 90361, that added together give a palindrome (91819).

The spelling of 145890361 in words is "one hundred forty-five million, eight hundred ninety thousand, three hundred sixty-one".