1066109951 has 2 divisors, whose sum is σ = 1066109952. Its totient is φ = 1066109950.

The previous prime is 1066109939. The next prime is 1066110029. The reversal of 1066109951 is 1599016601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066109951 is a prime.

It is a super-2 number, since 2×1066109951² = 2273180855242444802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066109351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533054975 + 533054976.

It is an arithmetic number, because the mean of its divisors is an integer number (533054976).

Almost surely, 2^1066109951 is an apocalyptic number.

1066109951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066109951 is an equidigital number, since it uses as much as digits as its factorization.

1066109951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 1066109951 is about 32651.3391915247. The cubic root of 1066109951 is about 1021.5681220630.

The spelling of 1066109951 in words is "one billion, sixty-six million, one hundred nine thousand, nine hundred fifty-one".