1407838745 has 4 divisors (see below), whose sum is σ = 1689406500. Its totient is φ = 1126270992.

The previous prime is 1407838723. The next prime is 1407838753. The reversal of 1407838745 is 5478387041.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 671639056 + 736199689 = 25916^2 + 27133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1407838745 - 2⁸ = 1407838489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1407838745.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 140783870 + ... + 140783879.

It is an arithmetic number, because the mean of its divisors is an integer number (422351625).

Almost surely, 2^1407838745 is an apocalyptic number.

It is an amenable number.

1407838745 is a deficient number, since it is larger than the sum of its proper divisors (281567755).

1407838745 is an equidigital number, since it uses as much as digits as its factorization.

1407838745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281567754.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 1407838745 is about 37521.1772869669. The cubic root of 1407838745 is about 1120.7729424797.

The spelling of 1407838745 in words is "one billion, four hundred seven million, eight hundred thirty-eight thousand, seven hundred forty-five".