1961600007 has 4 divisors (see below), whose sum is σ = 2615466680. Its totient is φ = 1307733336.

The previous prime is 1961599973. The next prime is 1961600027. The reversal of 1961600007 is 7000061691.

1961600007 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1961600007 - 2⁷ = 1961599879 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 (1961600027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326933332 + ... + 326933337.

It is an arithmetic number, because the mean of its divisors is an integer number (653866670).

Almost surely, 2^1961600007 is an apocalyptic number.

1961600007 is a deficient number, since it is larger than the sum of its proper divisors (653866673).

1961600007 is an equidigital number, since it uses as much as digits as its factorization.

1961600007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653866672.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1961600007 is about 44289.9537931572. The cubic root of 1961600007 is about 1251.8053926838.

Adding to 1961600007 its reverse (7000061691), we get a palindrome (8961661698).

The spelling of 1961600007 in words is "one billion, nine hundred sixty-one million, six hundred thousand, seven".