1201668503 has 6 divisors (see below), whose sum is σ = 1397859336. Its totient is φ = 1030001532.

The previous prime is 1201668487. The next prime is 1201668527. The reversal of 1201668503 is 3058661021.

It is a happy number.

It is not a de Polignac number, because 1201668503 - 2⁴ = 1201668487 is a prime.

It is a super-2 number, since 2×1201668503² = 2888014382204522018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201668503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201668703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12261875 + ... + 12261972.

It is an arithmetic number, because the mean of its divisors is an integer number (232976556).

Almost surely, 2^1201668503 is an apocalyptic number.

1201668503 is a deficient number, since it is larger than the sum of its proper divisors (196190833).

1201668503 is an equidigital number, since it uses as much as digits as its factorization.

1201668503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24523861 (or 24523854 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1201668503 is about 34665.0905523121. The cubic root of 1201668503 is about 1063.1508547061.

The spelling of 1201668503 in words is "one billion, two hundred one million, six hundred sixty-eight thousand, five hundred three".