1842969997 has 12 divisors (see below), whose sum is σ = 2043685980. Its totient is φ = 1660588160.

The previous prime is 1842969991. The next prime is 1842970009. The reversal of 1842969997 is 7999692481.

It can be written as a sum of positive squares in 2 ways, for example, as 993888676 + 849081321 = 31526^2 + 29139^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1842969997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1842969991) 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, 53722 + ... + 81067.

It is an arithmetic number, because the mean of its divisors is an integer number (170307165).

Almost surely, 2^1842969997 is an apocalyptic number.

It is an amenable number.

1842969997 is a deficient number, since it is larger than the sum of its proper divisors (200715983).

1842969997 is a wasteful number, since it uses less digits than its factorization.

1842969997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134924 (or 134913 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 64.

The square root of 1842969997 is about 42929.8264263903. The cubic root of 1842969997 is about 1226.0440904408.

The spelling of 1842969997 in words is "one billion, eight hundred forty-two million, nine hundred sixty-nine thousand, nine hundred ninety-seven".