1959613945 has 4 divisors (see below), whose sum is σ = 2351536740. Its totient is φ = 1567691152.

The previous prime is 1959613939. The next prime is 1959613951. The reversal of 1959613945 is 5493169591.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1959613939) and next prime (1959613951).

It can be written as a sum of positive squares in 2 ways, for example, as 714653289 + 1244960656 = 26733^2 + 35284^2 .

It is a cyclic number.

It is not a de Polignac number, because 1959613945 - 2²⁹ = 1422743033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1959613892 and 1959613901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195961390 + ... + 195961399.

It is an arithmetic number, because the mean of its divisors is an integer number (587884185).

Almost surely, 2^1959613945 is an apocalyptic number.

It is an amenable number.

1959613945 is a deficient number, since it is larger than the sum of its proper divisors (391922795).

1959613945 is an equidigital number, since it uses as much as digits as its factorization.

1959613945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391922794.

The product of its digits is 1312200, while the sum is 52.

The square root of 1959613945 is about 44267.5269808468. The cubic root of 1959613945 is about 1251.3827780425.

The spelling of 1959613945 in words is "one billion, nine hundred fifty-nine million, six hundred thirteen thousand, nine hundred forty-five".