1891377034 has 8 divisors (see below), whose sum is σ = 2849242500. Its totient is φ = 941629536.

The previous prime is 1891377017. The next prime is 1891377067. The reversal of 1891377034 is 4307731981.

It can be written as a sum of positive squares in 2 ways, for example, as 1697192809 + 194184225 = 41197^2 + 13935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028909 + ... + 2029840.

Almost surely, 2^1891377034 is an apocalyptic number.

1891377034 is a deficient number, since it is larger than the sum of its proper divisors (957865466).

1891377034 is a wasteful number, since it uses less digits than its factorization.

1891377034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058984.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1891377034 is about 43489.9647505031. The cubic root of 1891377034 is about 1236.6857895327.

The spelling of 1891377034 in words is "one billion, eight hundred ninety-one million, three hundred seventy-seven thousand, thirty-four".