1779964947 has 12 divisors (see below), whose sum is σ = 2609435400. Its totient is φ = 1168931808.

The previous prime is 1779964943. The next prime is 1779964951. The reversal of 1779964947 is 7494699771.

It is an interprime number because it is at equal distance from previous prime (1779964943) and next prime (1779964951).

It is not a de Polignac number, because 1779964947 - 2² = 1779964943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1779964943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1475322 + ... + 1476527.

It is an arithmetic number, because the mean of its divisors is an integer number (217452950).

Almost surely, 2^1779964947 is an apocalyptic number.

1779964947 is a deficient number, since it is larger than the sum of its proper divisors (829470453).

1779964947 is a wasteful number, since it uses less digits than its factorization.

1779964947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951922 (or 2951919 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The square root of 1779964947 is about 42189.6307995223. The cubic root of 1779964947 is about 1211.9103187408.

The spelling of 1779964947 in words is "one billion, seven hundred seventy-nine million, nine hundred sixty-four thousand, nine hundred forty-seven".