145372194 has 24 divisors (see below), whose sum is σ = 343607472. Its totient is φ = 44052120.

The previous prime is 145372193. The next prime is 145372217. The reversal of 145372194 is 491273541.

145372194 is a `hidden beast` number, since 14 + 537 + 21 + 94 = 666.

It is a super-2 number, since 2×145372194² = 42266149576747272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145372193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366904 + ... + 367299.

It is an arithmetic number, because the mean of its divisors is an integer number (14316978).

Almost surely, 2^145372194 is an apocalyptic number.

145372194 is an abundant number, since it is smaller than the sum of its proper divisors (198235278).

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

145372194 is a wasteful number, since it uses less digits than its factorization.

145372194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734222 (or 734219 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 145372194 is about 12057.0391887893. The cubic root of 145372194 is about 525.8079098308.

The spelling of 145372194 in words is "one hundred forty-five million, three hundred seventy-two thousand, one hundred ninety-four".