145857194 has 8 divisors (see below), whose sum is σ = 250040928. Its totient is φ = 62510220.

The previous prime is 145857193. The next prime is 145857223. The reversal of 145857194 is 491758541.

145857194 = T₆₄₅₂ + T₆₄₅₃ + ... + T₆₄₅₈.

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

It is not an unprimeable number, because it can be changed into a prime (145857193) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5209172 + ... + 5209199.

It is an arithmetic number, because the mean of its divisors is an integer number (31255116).

Almost surely, 2^145857194 is an apocalyptic number.

145857194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145857194 is a deficient number, since it is larger than the sum of its proper divisors (104183734).

145857194 is a wasteful number, since it uses less digits than its factorization.

145857194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418380.

The product of its digits is 201600, while the sum is 44.

The square root of 145857194 is about 12077.1351735418. The cubic root of 145857194 is about 526.3920053917.

The spelling of 145857194 in words is "one hundred forty-five million, eight hundred fifty-seven thousand, one hundred ninety-four".