145812194 has 16 divisors (see below), whose sum is σ = 251160480. Its totient is φ = 62789760.

The previous prime is 145812151. The next prime is 145812211. The reversal of 145812194 is 491218541.

It is a super-2 number, since 2×145812194² = 42522391838187272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173999 + ... + 174834.

It is an arithmetic number, because the mean of its divisors is an integer number (15697530).

Almost surely, 2^145812194 is an apocalyptic number.

145812194 is a deficient number, since it is larger than the sum of its proper divisors (105348286).

145812194 is a wasteful number, since it uses less digits than its factorization.

145812194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348865.

The product of its digits is 11520, while the sum is 35.

The square root of 145812194 is about 12075.2720052179. The cubic root of 145812194 is about 526.3378655031.

The spelling of 145812194 in words is "one hundred forty-five million, eight hundred twelve thousand, one hundred ninety-four".