1672023778 has 32 divisors (see below), whose sum is σ = 2684689920. Its totient is φ = 779159040.

The previous prime is 1672023733. The next prime is 1672023817. The reversal of 1672023778 is 8773202761.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519438 + ... + 522646.

It is an arithmetic number, because the mean of its divisors is an integer number (83896560).

Almost surely, 2^1672023778 is an apocalyptic number.

1672023778 is a deficient number, since it is larger than the sum of its proper divisors (1012666142).

1672023778 is a wasteful number, since it uses less digits than its factorization.

1672023778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1672023778 is about 40890.3873544871. The cubic root of 1672023778 is about 1186.9000544440.

The spelling of 1672023778 in words is "one billion, six hundred seventy-two million, twenty-three thousand, seven hundred seventy-eight".