1997130116 has 12 divisors (see below), whose sum is σ = 3516420432. Its totient is φ = 992438568.

The previous prime is 1997130101. The next prime is 1997130119. The reversal of 1997130116 is 6110317991.

It is a self number, because there is not a number n which added to its sum of digits gives 1997130116.

It is not an unprimeable number, because it can be changed into a prime (1997130119) 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, 1530890 + ... + 1532193.

It is an arithmetic number, because the mean of its divisors is an integer number (293035036).

Almost surely, 2^1997130116 is an apocalyptic number.

It is an amenable number.

1997130116 is a deficient number, since it is larger than the sum of its proper divisors (1519290316).

1997130116 is a wasteful number, since it uses less digits than its factorization.

1997130116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063250 (or 3063248 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 1997130116 is about 44689.2617526851. The cubic root of 1997130116 is about 1259.3181235377.

The spelling of 1997130116 in words is "one billion, nine hundred ninety-seven million, one hundred thirty thousand, one hundred sixteen".