1971140734 has 8 divisors (see below), whose sum is σ = 2957706000. Its totient is φ = 985238736.

The previous prime is 1971140719. The next prime is 1971140753. The reversal of 1971140734 is 4370411791.

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

It is a junction number, because it is equal to n+sod(n) for n = 1971140693 and 1971140702.

It is a congruent number.

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, 158319 + ... + 170314.

It is an arithmetic number, because the mean of its divisors is an integer number (369713250).

Almost surely, 2^1971140734 is an apocalyptic number.

1971140734 is a deficient number, since it is larger than the sum of its proper divisors (986565266).

1971140734 is a wasteful number, since it uses less digits than its factorization.

1971140734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331634.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1971140734 is about 44397.5307196245. The cubic root of 1971140734 is about 1253.8315996614.

The spelling of 1971140734 in words is "one billion, nine hundred seventy-one million, one hundred forty thousand, seven hundred thirty-four".