748351391 has 4 divisors (see below), whose sum is σ = 780888432. Its totient is φ = 715814352.

The previous prime is 748351337. The next prime is 748351421. The reversal of 748351391 is 193153847.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 748351391 - 2¹⁸ = 748089247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748351321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16268486 + ... + 16268531.

It is an arithmetic number, because the mean of its divisors is an integer number (195222108).

Almost surely, 2^748351391 is an apocalyptic number.

748351391 is a deficient number, since it is larger than the sum of its proper divisors (32537041).

748351391 is a wasteful number, since it uses less digits than its factorization.

748351391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32537040.

The product of its digits is 90720, while the sum is 41.

The square root of 748351391 is about 27356.0119717769. The cubic root of 748351391 is about 907.8940921809.

The spelling of 748351391 in words is "seven hundred forty-eight million, three hundred fifty-one thousand, three hundred ninety-one".