7431398741 has 16 divisors (see below), whose sum is σ = 8283567600. Its totient is φ = 6619565568.

The previous prime is 7431398729. The next prime is 7431398813. The reversal of 7431398741 is 1478931347.

It can be written as a sum of positive squares in 8 ways, for example, as 349503025 + 7081895716 = 18695^2 + 84154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7431398741 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 (7431398701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866225 + ... + 874761.

It is an arithmetic number, because the mean of its divisors is an integer number (517722975).

Almost surely, 2^7431398741 is an apocalyptic number.

It is an amenable number.

7431398741 is a deficient number, since it is larger than the sum of its proper divisors (852168859).

7431398741 is a wasteful number, since it uses less digits than its factorization.

7431398741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10888.

The product of its digits is 508032, while the sum is 47.

The square root of 7431398741 is about 86205.5609633160. The cubic root of 7431398741 is about 1951.4474233633.

The spelling of 7431398741 in words is "seven billion, four hundred thirty-one million, three hundred ninety-eight thousand, seven hundred forty-one".