1673678153 has 6 divisors (see below), whose sum is σ = 1946931786. Its totient is φ = 1434581232.

The previous prime is 1673678119. The next prime is 1673678159. The reversal of 1673678153 is 3518763761.

It can be written as a sum of positive squares in only one way, i.e., 1659177289 + 14500864 = 40733^2 + 3808^2 .

It is not a de Polignac number, because 1673678153 - 2¹⁸ = 1673416009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1673678098 and 1673678107.

It is not an unprimeable number, because it can be changed into a prime (1673678159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17078300 + ... + 17078397.

It is an arithmetic number, because the mean of its divisors is an integer number (324488631).

Almost surely, 2^1673678153 is an apocalyptic number.

It is an amenable number.

1673678153 is a deficient number, since it is larger than the sum of its proper divisors (273253633).

1673678153 is an equidigital number, since it uses as much as digits as its factorization.

1673678153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34156711 (or 34156704 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 1673678153 is about 40910.6117407208. The cubic root of 1673678153 is about 1187.2913827138.

The spelling of 1673678153 in words is "one billion, six hundred seventy-three million, six hundred seventy-eight thousand, one hundred fifty-three".