145903188 has 24 divisors (see below), whose sum is σ = 343124992. Its totient is φ = 48250944.

The previous prime is 145903187. The next prime is 145903201. The reversal of 145903188 is 881309541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145903187) 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, 46345 + ... + 49392.

Almost surely, 2^145903188 is an apocalyptic number.

It is an amenable number.

145903188 is an abundant number, since it is smaller than the sum of its proper divisors (197221804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145903188 is a wasteful number, since it uses less digits than its factorization.

145903188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95871 (or 95869 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 145903188 is about 12079.0392002013. The cubic root of 145903188 is about 526.4473296644.

The spelling of 145903188 in words is "one hundred forty-five million, nine hundred three thousand, one hundred eighty-eight".