145191000 has 64 divisors (see below), whose sum is σ = 453005280. Its totient is φ = 38716800.

The previous prime is 145190977. The next prime is 145191029. The reversal of 145191000 is 191541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21199 + ... + 27198.

Almost surely, 2^145191000 is an apocalyptic number.

145191000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145191000 is an abundant number, since it is smaller than the sum of its proper divisors (307814280).

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

145191000 is a wasteful number, since it uses less digits than its factorization.

145191000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48421 (or 48407 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 145191000 is about 12049.5228121283. The cubic root of 145191000 is about 525.5893608164.

The spelling of 145191000 in words is "one hundred forty-five million, one hundred ninety-one thousand".