1187247941 has 8 divisors (see below), whose sum is σ = 1316412768. Its totient is φ = 1061622000.

The previous prime is 1187247917. The next prime is 1187247959. The reversal of 1187247941 is 1497427811.

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 1187247941 - 2⁶ = 1187247877 is a prime.

It is a super-3 number, since 3×1187247941³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1187247892 and 1187247901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187247911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884015 + ... + 885356.

It is an arithmetic number, because the mean of its divisors is an integer number (164551596).

Almost surely, 2^1187247941 is an apocalyptic number.

1187247941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1187247941 is a deficient number, since it is larger than the sum of its proper divisors (129164827).

1187247941 is a wasteful number, since it uses less digits than its factorization.

1187247941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769443.

The product of its digits is 112896, while the sum is 44.

The square root of 1187247941 is about 34456.4644297699. The cubic root of 1187247941 is about 1058.8809660281.

The spelling of 1187247941 in words is "one billion, one hundred eighty-seven million, two hundred forty-seven thousand, nine hundred forty-one".