1997929466 has 16 divisors (see below), whose sum is σ = 3257591904. Its totient is φ = 913502064.

The previous prime is 1997929463. The next prime is 1997929469. The reversal of 1997929466 is 6649297991.

It is an interprime number because it is at equal distance from previous prime (1997929463) and next prime (1997929469).

It is a super-2 number, since 2×1997929466² = 7983444302222090312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1997929399 and 1997929408.

It is not an unprimeable number, because it can be changed into a prime (1997929463) 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, 356300 + ... + 361863.

It is an arithmetic number, because the mean of its divisors is an integer number (203599494).

Almost surely, 2^1997929466 is an apocalyptic number.

1997929466 is a deficient number, since it is larger than the sum of its proper divisors (1259662438).

1997929466 is a wasteful number, since it uses less digits than its factorization.

1997929466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718285.

The product of its digits is 13226976, while the sum is 62.

The square root of 1997929466 is about 44698.2042816040. The cubic root of 1997929466 is about 1259.4861148738.

The spelling of 1997929466 in words is "one billion, nine hundred ninety-seven million, nine hundred twenty-nine thousand, four hundred sixty-six".