1001970139 has 2 divisors, whose sum is σ = 1001970140. Its totient is φ = 1001970138.

The previous prime is 1001970119. The next prime is 1001970169. The reversal of 1001970139 is 9310791001.

It is a weak prime.

It is an emirp because it is prime and its reverse (9310791001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001970139 - 2⁹ = 1001969627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001970139.

It is not a weakly prime, because it can be changed into another prime (1001970119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500985069 + 500985070.

It is an arithmetic number, because the mean of its divisors is an integer number (500985070).

Almost surely, 2^1001970139 is an apocalyptic number.

1001970139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001970139 is an equidigital number, since it uses as much as digits as its factorization.

1001970139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 1001970139 is about 31653.9119067454. The cubic root of 1001970139 is about 1000.6562821995.

The spelling of 1001970139 in words is "one billion, one million, nine hundred seventy thousand, one hundred thirty-nine".