1188854749 has 2 divisors, whose sum is σ = 1188854750. Its totient is φ = 1188854748.

The previous prime is 1188854741. The next prime is 1188854809. The reversal of 1188854749 is 9474588811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110089124 + 78765625 = 33318^2 + 8875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188854749 - 2³ = 1188854741 is a prime.

It is a super-2 number, since 2×1188854749² = 2826751228439706002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1188854749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1188854741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594427374 + 594427375.

It is an arithmetic number, because the mean of its divisors is an integer number (594427375).

Almost surely, 2^1188854749 is an apocalyptic number.

It is an amenable number.

1188854749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188854749 is an equidigital number, since it uses as much as digits as its factorization.

1188854749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 55.

The square root of 1188854749 is about 34479.7730415964. The cubic root of 1188854749 is about 1059.3584432157.

The spelling of 1188854749 in words is "one billion, one hundred eighty-eight million, eight hundred fifty-four thousand, seven hundred forty-nine".