1161820103 has 8 divisors (see below), whose sum is σ = 1233268272. Its totient is φ = 1090717056.

The previous prime is 1161820063. The next prime is 1161820117. The reversal of 1161820103 is 3010281611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161820103 - 2¹⁴ = 1161803719 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 (1161820603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79325 + ... + 92822.

It is an arithmetic number, because the mean of its divisors is an integer number (154158534).

Almost surely, 2^1161820103 is an apocalyptic number.

1161820103 is a deficient number, since it is larger than the sum of its proper divisors (71448169).

1161820103 is a wasteful number, since it uses less digits than its factorization.

1161820103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172561.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1161820103 is about 34085.4822908522. The cubic root of 1161820103 is about 1051.2668316403.

The spelling of 1161820103 in words is "one billion, one hundred sixty-one million, eight hundred twenty thousand, one hundred three".