745291901 has 2 divisors, whose sum is σ = 745291902. Its totient is φ = 745291900.

The previous prime is 745291889. The next prime is 745291903. The reversal of 745291901 is 109192547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491686276 + 253605625 = 22174^2 + 15925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745291901 is a prime.

Together with 745291903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745291903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372645950 + 372645951.

It is an arithmetic number, because the mean of its divisors is an integer number (372645951).

Almost surely, 2^745291901 is an apocalyptic number.

It is an amenable number.

745291901 is a deficient number, since it is larger than the sum of its proper divisors (1).

745291901 is an equidigital number, since it uses as much as digits as its factorization.

745291901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 745291901 is about 27300.0348168276. The cubic root of 745291901 is about 906.6551524243.

The spelling of 745291901 in words is "seven hundred forty-five million, two hundred ninety-one thousand, nine hundred one".