1674159891 has 4 divisors (see below), whose sum is σ = 2232213192. Its totient is φ = 1116106592.

The previous prime is 1674159889. The next prime is 1674159899. The reversal of 1674159891 is 1989514761.

1674159891 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1674159891 - 2¹ = 1674159889 is a prime.

It is a super-2 number, since 2×1674159891² = 5605622681266263762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1674159899) 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, 279026646 + ... + 279026651.

It is an arithmetic number, because the mean of its divisors is an integer number (558053298).

Almost surely, 2^1674159891 is an apocalyptic number.

1674159891 is a deficient number, since it is larger than the sum of its proper divisors (558053301).

1674159891 is an equidigital number, since it uses as much as digits as its factorization.

1674159891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558053300.

The product of its digits is 544320, while the sum is 51.

The square root of 1674159891 is about 40916.4990071243. The cubic root of 1674159891 is about 1187.4052852399.

The spelling of 1674159891 in words is "one billion, six hundred seventy-four million, one hundred fifty-nine thousand, eight hundred ninety-one".