1903414168261 has 4 divisors (see below), whose sum is σ = 1904485309132. Its totient is φ = 1902343027392.

The previous prime is 1903414168241. The next prime is 1903414168267. The reversal of 1903414168261 is 1628614143091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 372673620900 + 1530740547361 = 610470^2 + 1237231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1903414168261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1903414168267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535567770 + ... + 535571323.

It is an arithmetic number, because the mean of its divisors is an integer number (476121327283).

Almost surely, 2^{1903414168261} is an apocalyptic number.

It is an amenable number.

1903414168261 is a deficient number, since it is larger than the sum of its proper divisors (1071140871).

1903414168261 is a wasteful number, since it uses less digits than its factorization.

1903414168261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071140870.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1903414168261 in words is "one trillion, nine hundred three billion, four hundred fourteen million, one hundred sixty-eight thousand, two hundred sixty-one".