146748991 has 2 divisors, whose sum is σ = 146748992. Its totient is φ = 146748990.

The previous prime is 146748967. The next prime is 146749007. The reversal of 146748991 is 199847641.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 146748991 - 2⁷ = 146748863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146748911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73374495 + 73374496.

It is an arithmetic number, because the mean of its divisors is an integer number (73374496).

Almost surely, 2^146748991 is an apocalyptic number.

146748991 is a deficient number, since it is larger than the sum of its proper divisors (1).

146748991 is an equidigital number, since it uses as much as digits as its factorization.

146748991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 146748991 is about 12113.9997936272. Note that the first 3 decimals coincide. The cubic root of 146748991 is about 527.4626446448.

The spelling of 146748991 in words is "one hundred forty-six million, seven hundred forty-eight thousand, nine hundred ninety-one".