745754381 has 2 divisors, whose sum is σ = 745754382. Its totient is φ = 745754380.

The previous prime is 745754363. The next prime is 745754413. The reversal of 745754381 is 183457547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 531717481 + 214036900 = 23059^2 + 14630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745754381 is a prime.

It is a super-2 number, since 2×745754381² = 1112299193561386322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745754281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372877190 + 372877191.

It is an arithmetic number, because the mean of its divisors is an integer number (372877191).

Almost surely, 2^745754381 is an apocalyptic number.

It is an amenable number.

745754381 is a deficient number, since it is larger than the sum of its proper divisors (1).

745754381 is an equidigital number, since it uses as much as digits as its factorization.

745754381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 44.

The square root of 745754381 is about 27308.5038220698. The cubic root of 745754381 is about 906.8426508492.

The spelling of 745754381 in words is "seven hundred forty-five million, seven hundred fifty-four thousand, three hundred eighty-one".