738861457 has 2 divisors, whose sum is σ = 738861458. Its totient is φ = 738861456.

The previous prime is 738861437. The next prime is 738861467. The reversal of 738861457 is 754168837.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401441296 + 337420161 = 20036^2 + 18369^2 .

It is a cyclic number.

It is not a de Polignac number, because 738861457 - 2¹⁵ = 738828689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 738861457.

It is not a weakly prime, because it can be changed into another prime (738861437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369430728 + 369430729.

It is an arithmetic number, because the mean of its divisors is an integer number (369430729).

Almost surely, 2^738861457 is an apocalyptic number.

It is an amenable number.

738861457 is a deficient number, since it is larger than the sum of its proper divisors (1).

738861457 is an equidigital number, since it uses as much as digits as its factorization.

738861457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 738861457 is about 27182.0061253764. The cubic root of 738861457 is about 904.0400500602.

The spelling of 738861457 in words is "seven hundred thirty-eight million, eight hundred sixty-one thousand, four hundred fifty-seven".