1203644055 has 16 divisors (see below), whose sum is σ = 1930548960. Its totient is φ = 640370688.

The previous prime is 1203644041. The next prime is 1203644059. The reversal of 1203644055 is 5504463021.

It is not a de Polignac number, because 1203644055 - 2¹⁵ = 1203611287 is a prime.

It is a super-2 number, since 2×1203644055² = 2897518022273686050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203644059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91962 + ... + 104231.

It is an arithmetic number, because the mean of its divisors is an integer number (120659310).

Almost surely, 2^1203644055 is an apocalyptic number.

1203644055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1203644055 is a deficient number, since it is larger than the sum of its proper divisors (726904905).

1203644055 is a wasteful number, since it uses less digits than its factorization.

1203644055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196610.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1203644055 is about 34693.5736844736. The cubic root of 1203644055 is about 1063.7331450430.

The spelling of 1203644055 in words is "one billion, two hundred three million, six hundred forty-four thousand, fifty-five".