1971372086 has 8 divisors (see below), whose sum is σ = 3029181624. Its totient is φ = 961644880.

The previous prime is 1971372061. The next prime is 1971372097. The reversal of 1971372086 is 6802731791.

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

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, 12020480 + ... + 12020643.

It is an arithmetic number, because the mean of its divisors is an integer number (378647703).

Almost surely, 2^1971372086 is an apocalyptic number.

1971372086 is a deficient number, since it is larger than the sum of its proper divisors (1057809538).

1971372086 is a wasteful number, since it uses less digits than its factorization.

1971372086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24041166.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1971372086 is about 44400.1361033950. The cubic root of 1971372086 is about 1253.8806516469.

The spelling of 1971372086 in words is "one billion, nine hundred seventy-one million, three hundred seventy-two thousand, eighty-six".