145266191 has 16 divisors (see below), whose sum is σ = 180787200. Its totient is φ = 113889888.

The previous prime is 145266151. The next prime is 145266211. The reversal of 145266191 is 191662541.

It is not a de Polignac number, because 145266191 - 2¹⁸ = 145004047 is a prime.

It is a super-2 number, since 2×145266191² = 42204532495296962, 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 (145266101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14975 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (11299200).

Almost surely, 2^145266191 is an apocalyptic number.

145266191 is a deficient number, since it is larger than the sum of its proper divisors (35521009).

145266191 is a wasteful number, since it uses less digits than its factorization.

145266191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37718.

The product of its digits is 12960, while the sum is 35.

The square root of 145266191 is about 12052.6424903421. The cubic root of 145266191 is about 525.6800752764.

The spelling of 145266191 in words is "one hundred forty-five million, two hundred sixty-six thousand, one hundred ninety-one".