1970025749 has 2 divisors, whose sum is σ = 1970025750. Its totient is φ = 1970025748.

The previous prime is 1970025679. The next prime is 1970025751. The reversal of 1970025749 is 9475200791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1861491025 + 108534724 = 43145^2 + 10418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970025749 - 2⁸ = 1970025493 is a prime.

It is a super-2 number, since 2×1970025749² = 7762002903446022002, which contains 22 as substring.

Together with 1970025751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1970225749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985012874 + 985012875.

It is an arithmetic number, because the mean of its divisors is an integer number (985012875).

Almost surely, 2^1970025749 is an apocalyptic number.

It is an amenable number.

1970025749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970025749 is an equidigital number, since it uses as much as digits as its factorization.

1970025749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1970025749 is about 44384.9721076853. The cubic root of 1970025749 is about 1253.5951431635.

The spelling of 1970025749 in words is "one billion, nine hundred seventy million, twenty-five thousand, seven hundred forty-nine".