1217384970 has 16 divisors (see below), whose sum is σ = 2921724000. Its totient is φ = 324635984.

The previous prime is 1217384969. The next prime is 1217385053. The reversal of 1217384970 is 794837121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20289720 + ... + 20289779.

It is an arithmetic number, because the mean of its divisors is an integer number (182607750).

Almost surely, 2^1217384970 is an apocalyptic number.

1217384970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217384970 is an abundant number, since it is smaller than the sum of its proper divisors (1704339030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217384970 is a wasteful number, since it uses less digits than its factorization.

1217384970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40579509.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1217384970 is about 34891.0442664017. The cubic root of 1217384970 is about 1067.7657312054.

The spelling of 1217384970 in words is "one billion, two hundred seventeen million, three hundred eighty-four thousand, nine hundred seventy".