1672434078 has 16 divisors (see below), whose sum is σ = 3822706560. Its totient is φ = 477838296.

The previous prime is 1672434059. The next prime is 1672434083. The reversal of 1672434078 is 8704342761.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 39819859 = 1672434078 / (1 + 6 + 7 + 2 + 4 + 3 + 4 + 0 + 7 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19909888 + ... + 19909971.

It is an arithmetic number, because the mean of its divisors is an integer number (238919160).

Almost surely, 2^1672434078 is an apocalyptic number.

1672434078 is an abundant number, since it is smaller than the sum of its proper divisors (2150272482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1672434078 is a wasteful number, since it uses less digits than its factorization.

1672434078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39819871.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 1672434078 is about 40895.4041183114. The cubic root of 1672434078 is about 1186.9971314653.

The spelling of 1672434078 in words is "one billion, six hundred seventy-two million, four hundred thirty-four thousand, seventy-eight".