1970018905 has 8 divisors (see below), whose sum is σ = 2503082952. Its totient is φ = 1483308288.

The previous prime is 1970018903. The next prime is 1970018917. The reversal of 1970018905 is 5098100791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 734355801 + 1235663104 = 27099^2 + 35152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1970018905 - 2¹ = 1970018903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970018903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11588262 + ... + 11588431.

It is an arithmetic number, because the mean of its divisors is an integer number (312885369).

Almost surely, 2^1970018905 is an apocalyptic number.

It is an amenable number.

1970018905 is a deficient number, since it is larger than the sum of its proper divisors (533064047).

1970018905 is a wasteful number, since it uses less digits than its factorization.

1970018905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23176715.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 1970018905 is about 44384.8950094511. The cubic root of 1970018905 is about 1253.5936914709.

The spelling of 1970018905 in words is "one billion, nine hundred seventy million, eighteen thousand, nine hundred five".