20191407970 has 8 divisors (see below), whose sum is σ = 36344534364. Its totient is φ = 8076563184.

The previous prime is 20191407959. The next prime is 20191407979. The reversal of 20191407970 is 7970419102.

It can be written as a sum of positive squares in 2 ways, for example, as 20187010561 + 4397409 = 142081^2 + 2097^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20191407979) 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, 1009570389 + ... + 1009570408.

Almost surely, 2^20191407970 is an apocalyptic number.

20191407970 is a deficient number, since it is larger than the sum of its proper divisors (16153126394).

20191407970 is a wasteful number, since it uses less digits than its factorization.

20191407970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019140804.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 20191407970 in words is "twenty billion, one hundred ninety-one million, four hundred seven thousand, nine hundred seventy".