1151639 has 2 divisors, whose sum is σ = 1151640. Its totient is φ = 1151638.

The previous prime is 1151629. The next prime is 1151651. The reversal of 1151639 is 9361511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1151639 - 2⁸ = 1151383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575819 + 575820.

It is an arithmetic number, because the mean of its divisors is an integer number (575820).

2^1151639 is an apocalyptic number.

1151639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151639 is an equidigital number, since it uses as much as digits as its factorization.

1151639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 26.

The square root of 1151639 is about 1073.1444450772. The cubic root of 1151639 is about 104.8187045359.

The spelling of 1151639 in words is "one million, one hundred fifty-one thousand, six hundred thirty-nine".