1670440396 has 12 divisors (see below), whose sum is σ = 2923565400. Its totient is φ = 835136000.

The previous prime is 1670440381. The next prime is 1670440399. The reversal of 1670440396 is 6930440761.

It is a super-2 number, since 2×1670440396² = 5580742233177273632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1670440399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50955 + ... + 77053.

It is an arithmetic number, because the mean of its divisors is an integer number (243630450).

Almost surely, 2^1670440396 is an apocalyptic number.

It is an amenable number.

1670440396 is a deficient number, since it is larger than the sum of its proper divisors (1253125004).

1670440396 is a wasteful number, since it uses less digits than its factorization.

1670440396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42104 (or 42102 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1670440396 is about 40871.0214699853. The cubic root of 1670440396 is about 1186.5252771338.

The spelling of 1670440396 in words is "one billion, six hundred seventy million, four hundred forty thousand, three hundred ninety-six".