1997970119 has 8 divisors (see below), whose sum is σ = 2088529920. Its totient is φ = 1909042200.

The previous prime is 1997970113. The next prime is 1997970151. The reversal of 1997970119 is 9110797991.

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

It is a cyclic number.

It is not a de Polignac number, because 1997970119 - 2¹² = 1997966023 is a prime.

It is a super-2 number, since 2×1997970119² = 7983769192833748322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997970113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405467 + ... + 410364.

It is an arithmetic number, because the mean of its divisors is an integer number (261066240).

Almost surely, 2^1997970119 is an apocalyptic number.

1997970119 is a deficient number, since it is larger than the sum of its proper divisors (90559801).

1997970119 is an equidigital number, since it uses as much as digits as its factorization.

1997970119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815941.

The product of its (nonzero) digits is 321489, while the sum is 53.

The square root of 1997970119 is about 44698.6590291029. The cubic root of 1997970119 is about 1259.4946573078.

The spelling of 1997970119 in words is "one billion, nine hundred ninety-seven million, nine hundred seventy thousand, one hundred nineteen".