1966570905 has 32 divisors (see below), whose sum is σ = 3480148224. Its totient is φ = 941988096.

The previous prime is 1966570877. The next prime is 1966570933. The reversal of 1966570905 is 5090756691.

It is an interprime number because it is at equal distance from previous prime (1966570877) and next prime (1966570933).

It is not a de Polignac number, because 1966570905 - 2¹⁵ = 1966538137 is a prime.

It is a super-2 number, since 2×1966570905² = 7734802248785038050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129069 + ... + 143498.

It is an arithmetic number, because the mean of its divisors is an integer number (108754632).

Almost surely, 2^1966570905 is an apocalyptic number.

1966570905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1966570905 is a deficient number, since it is larger than the sum of its proper divisors (1513577319).

1966570905 is a wasteful number, since it uses less digits than its factorization.

1966570905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272625.

The product of its (nonzero) digits is 510300, while the sum is 48.

The square root of 1966570905 is about 44346.0359558777. The cubic root of 1966570905 is about 1252.8619023447.

The spelling of 1966570905 in words is "one billion, nine hundred sixty-six million, five hundred seventy thousand, nine hundred five".