751918949 has 2 divisors, whose sum is σ = 751918950. Its totient is φ = 751918948.

The previous prime is 751918861. The next prime is 751918997. The reversal of 751918949 is 949819157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751746724 + 172225 = 27418^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 751918949 - 2¹⁶ = 751853413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 751918949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (751938949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 375959474 + 375959475.

It is an arithmetic number, because the mean of its divisors is an integer number (375959475).

Almost surely, 2^751918949 is an apocalyptic number.

It is an amenable number.

751918949 is a deficient number, since it is larger than the sum of its proper divisors (1).

751918949 is an equidigital number, since it uses as much as digits as its factorization.

751918949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 53.

The square root of 751918949 is about 27421.1405488539. The cubic root of 751918949 is about 909.3345168722.

The spelling of 751918949 in words is "seven hundred fifty-one million, nine hundred eighteen thousand, nine hundred forty-nine".