145620194 has 16 divisors (see below), whose sum is σ = 230774400. Its totient is φ = 68802384.

The previous prime is 145620179. The next prime is 145620221. The reversal of 145620194 is 491026541.

It is a self number, because there is not a number n which added to its sum of digits gives 145620194.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23984 + ... + 29435.

It is an arithmetic number, because the mean of its divisors is an integer number (14423400).

Almost surely, 2^145620194 is an apocalyptic number.

145620194 is a deficient number, since it is larger than the sum of its proper divisors (85154206).

145620194 is a wasteful number, since it uses less digits than its factorization.

145620194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53497.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 145620194 is about 12067.3192549132. The cubic root of 145620194 is about 526.1067434096.

The spelling of 145620194 in words is "one hundred forty-five million, six hundred twenty thousand, one hundred ninety-four".