1451105861 has 2 divisors, whose sum is σ = 1451105862. Its totient is φ = 1451105860.

The previous prime is 1451105837. The next prime is 1451105893. The reversal of 1451105861 is 1685011541.

It is an a-pointer prime, because the next prime (1451105893) can be obtained adding 1451105861 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1419857761 + 31248100 = 37681^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451105861 - 2¹⁸ = 1450843717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451105801) 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 as a sum of consecutive naturals, namely, 725552930 + 725552931.

It is an arithmetic number, because the mean of its divisors is an integer number (725552931).

Almost surely, 2^1451105861 is an apocalyptic number.

It is an amenable number.

1451105861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451105861 is an equidigital number, since it uses as much as digits as its factorization.

1451105861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 32.

The square root of 1451105861 is about 38093.3834280968. The cubic root of 1451105861 is about 1132.1388630962.

The spelling of 1451105861 in words is "one billion, four hundred fifty-one million, one hundred five thousand, eight hundred sixty-one".