1694444961 has 16 divisors (see below), whose sum is σ = 2609627328. Its totient is φ = 966528000.

The previous prime is 1694444957. The next prime is 1694444963.

1694444961 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1694444961 - 2² = 1694444957 is a prime.

It is a super-2 number, since 2×1694444961² = 5742287451716583042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1694444961.

It is not an unprimeable number, because it can be changed into a prime (1694444963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1509640 + ... + 1510761.

It is an arithmetic number, because the mean of its divisors is an integer number (163101708).

Almost surely, 2^1694444961 is an apocalyptic number.

1694444961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1694444961 is a deficient number, since it is larger than the sum of its proper divisors (915182367).

1694444961 is a wasteful number, since it uses less digits than its factorization.

1694444961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020432.

The product of its digits is 746496, while the sum is 48.

The square root of 1694444961 is about 41163.6363918447. The cubic root of 1694444961 is about 1192.1818036533.

The spelling of 1694444961 in words is "one billion, six hundred ninety-four million, four hundred forty-four thousand, nine hundred sixty-one".