145629191 has 8 divisors (see below), whose sum is σ = 154303344. Its totient is φ = 136967040.

The previous prime is 145629181. The next prime is 145629193. The reversal of 145629191 is 191926541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145629191 is a prime.

It is a super-2 number, since 2×145629191² = 42415722542628962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145629193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38501 + ... + 42113.

It is an arithmetic number, because the mean of its divisors is an integer number (19287918).

Almost surely, 2^145629191 is an apocalyptic number.

145629191 is a deficient number, since it is larger than the sum of its proper divisors (8674153).

145629191 is a wasteful number, since it uses less digits than its factorization.

145629191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its digits is 19440, while the sum is 38.

The square root of 145629191 is about 12067.6920328620. The cubic root of 145629191 is about 526.1175781818.

The spelling of 145629191 in words is "one hundred forty-five million, six hundred twenty-nine thousand, one hundred ninety-one".