149190823 has 2 divisors, whose sum is σ = 149190824. Its totient is φ = 149190822.

The previous prime is 149190799. The next prime is 149190871. The reversal of 149190823 is 328091941.

149190823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149190823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149190883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74595411 + 74595412.

It is an arithmetic number, because the mean of its divisors is an integer number (74595412).

Almost surely, 2^149190823 is an apocalyptic number.

149190823 is a deficient number, since it is larger than the sum of its proper divisors (1).

149190823 is an equidigital number, since it uses as much as digits as its factorization.

149190823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 149190823 is about 12214.3695293699. The cubic root of 149190823 is about 530.3721404435.

The spelling of 149190823 in words is "one hundred forty-nine million, one hundred ninety thousand, eight hundred twenty-three".