1185155 has 16 divisors (see below), whose sum is σ = 1534464. Its totient is φ = 875520.

The previous prime is 1185131. The next prime is 1185179. The reversal of 1185155 is 5515811.

It is an interprime number because it is at equal distance from previous prime (1185131) and next prime (1185179).

It is not a de Polignac number, because 1185155 - 2¹⁴ = 1168771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6110 + ... + 6300.

It is an arithmetic number, because the mean of its divisors is an integer number (95904).

2^1185155 is an apocalyptic number.

1185155 is a deficient number, since it is larger than the sum of its proper divisors (349309).

1185155 is a wasteful number, since it uses less digits than its factorization.

1185155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 1000, while the sum is 26.

The square root of 1185155 is about 1088.6482443838. The cubic root of 1185155 is about 105.8258383654.

The spelling of 1185155 in words is "one million, one hundred eighty-five thousand, one hundred fifty-five".