1089671251 has 2 divisors, whose sum is σ = 1089671252. Its totient is φ = 1089671250.

The previous prime is 1089671221. The next prime is 1089671263. The reversal of 1089671251 is 1521769801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1089671251 - 2¹⁵ = 1089638483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1089671221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544835625 + 544835626.

It is an arithmetic number, because the mean of its divisors is an integer number (544835626).

Almost surely, 2^1089671251 is an apocalyptic number.

1089671251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089671251 is an equidigital number, since it uses as much as digits as its factorization.

1089671251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1089671251 is about 33010.1689029305. The cubic root of 1089671251 is about 1029.0389914717.

The spelling of 1089671251 in words is "one billion, eighty-nine million, six hundred seventy-one thousand, two hundred fifty-one".