1189875105 has 12 divisors (see below), whose sum is σ = 2062450260. Its totient is φ = 634600032.

The previous prime is 1189875079. The next prime is 1189875131. The reversal of 1189875105 is 5015789811.

It is an interprime number because it is at equal distance from previous prime (1189875079) and next prime (1189875131).

It can be written as a sum of positive squares in 2 ways, for example, as 907937424 + 281937681 = 30132^2 + 16791^2 .

It is not a de Polignac number, because 1189875105 - 2⁵ = 1189875073 is a prime.

It is a super-2 number, since 2×1189875105² = 2831605530997522050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 26441669 = 1189875105 / (1 + 1 + 8 + 9 + 8 + 7 + 5 + 1 + 0 + 5).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13220790 + ... + 13220879.

It is an arithmetic number, because the mean of its divisors is an integer number (171870855).

Almost surely, 2^1189875105 is an apocalyptic number.

1189875105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1189875105 is a deficient number, since it is larger than the sum of its proper divisors (872575155).

1189875105 is a wasteful number, since it uses less digits than its factorization.

1189875105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26441680 (or 26441677 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 45.

The square root of 1189875105 is about 34494.5663112323. The cubic root of 1189875105 is about 1059.6614277061.

The spelling of 1189875105 in words is "one billion, one hundred eighty-nine million, eight hundred seventy-five thousand, one hundred five".