1187413 has 2 divisors, whose sum is σ = 1187414. Its totient is φ = 1187412.

The previous prime is 1187411. The next prime is 1187419. The reversal of 1187413 is 3147811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1096209 + 91204 = 1047^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187413 - 2¹ = 1187411 is a prime.

Together with 1187411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593706 + 593707.

It is an arithmetic number, because the mean of its divisors is an integer number (593707).

2^1187413 is an apocalyptic number.

It is an amenable number.

1187413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187413 is an equidigital number, since it uses as much as digits as its factorization.

1187413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 1187413 is about 1089.6848168163. The cubic root of 1187413 is about 105.8930034614.

It can be divided in two parts, 1187 and 413, that added together give a square (1600 = 40²).

The spelling of 1187413 in words is "one million, one hundred eighty-seven thousand, four hundred thirteen".