1217493950 has 24 divisors (see below), whose sum is σ = 2342629080. Its totient is φ = 470204000.

The previous prime is 1217493943. The next prime is 1217493967. The reversal of 1217493950 is 593947121.

It is a junction number, because it is equal to n+sod(n) for n = 1217493898 and 1217493907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418376 + ... + 421275.

It is an arithmetic number, because the mean of its divisors is an integer number (97609545).

Almost surely, 2^1217493950 is an apocalyptic number.

1217493950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217493950 is a deficient number, since it is larger than the sum of its proper divisors (1125135130).

1217493950 is a wasteful number, since it uses less digits than its factorization.

1217493950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839692 (or 839687 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 1217493950 is about 34892.6059502583. The cubic root of 1217493950 is about 1067.7975922957.

The spelling of 1217493950 in words is "one billion, two hundred seventeen million, four hundred ninety-three thousand, nine hundred fifty".