1970963779 has 4 divisors (see below), whose sum is σ = 1971572184. Its totient is φ = 1970355376.

The previous prime is 1970963777. The next prime is 1970963831. The reversal of 1970963779 is 9773690791.

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

It is a cyclic number.

It is not a de Polignac number, because 1970963779 - 2¹ = 1970963777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970963777) 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, 299317 + ... + 305830.

It is an arithmetic number, because the mean of its divisors is an integer number (492893046).

Almost surely, 2^1970963779 is an apocalyptic number.

1970963779 is a deficient number, since it is larger than the sum of its proper divisors (608405).

1970963779 is an equidigital number, since it uses as much as digits as its factorization.

1970963779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608404.

The product of its (nonzero) digits is 4500846, while the sum is 58.

The square root of 1970963779 is about 44395.5378275790. The cubic root of 1970963779 is about 1253.7940785099.

The spelling of 1970963779 in words is "one billion, nine hundred seventy million, nine hundred sixty-three thousand, seven hundred seventy-nine".