748914781 has 2 divisors, whose sum is σ = 748914782. Its totient is φ = 748914780.

The previous prime is 748914769. The next prime is 748914791. The reversal of 748914781 is 187419847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428862681 + 320052100 = 20709^2 + 17890^2 .

It is a cyclic number.

It is not a de Polignac number, because 748914781 - 2⁹ = 748914269 is a prime.

It is a super-2 number, since 2×748914781² = 1121746698400555922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (748914791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374457390 + 374457391.

It is an arithmetic number, because the mean of its divisors is an integer number (374457391).

Almost surely, 2^748914781 is an apocalyptic number.

It is an amenable number.

748914781 is a deficient number, since it is larger than the sum of its proper divisors (1).

748914781 is an equidigital number, since it uses as much as digits as its factorization.

748914781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 49.

The square root of 748914781 is about 27366.3074052748. The cubic root of 748914781 is about 908.1218684873.

The spelling of 748914781 in words is "seven hundred forty-eight million, nine hundred fourteen thousand, seven hundred eighty-one".