146090891 has 2 divisors, whose sum is σ = 146090892. Its totient is φ = 146090890.

The previous prime is 146090863. The next prime is 146090929. The reversal of 146090891 is 198090641.

It is a happy number.

146090891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (146090929) can be obtained adding 146090891 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 146090891 - 2¹⁴ = 146074507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (146090801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73045445 + 73045446.

It is an arithmetic number, because the mean of its divisors is an integer number (73045446).

Almost surely, 2^146090891 is an apocalyptic number.

146090891 is a deficient number, since it is larger than the sum of its proper divisors (1).

146090891 is an equidigital number, since it uses as much as digits as its factorization.

146090891 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 38.

The square root of 146090891 is about 12086.8064847585. The cubic root of 146090891 is about 526.6729893400.

The spelling of 146090891 in words is "one hundred forty-six million, ninety thousand, eight hundred ninety-one".