1074400861 has 4 divisors (see below), whose sum is σ = 1074475612. Its totient is φ = 1074326112.

The previous prime is 1074400853. The next prime is 1074400889. The reversal of 1074400861 is 1680044701.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1680044701 = 43 ⋅39070807.

It can be written as a sum of positive squares in 2 ways, for example, as 60933636 + 1013467225 = 7806^2 + 31835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1074400861 - 2³ = 1074400853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1074400891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8250 + ... + 47083.

It is an arithmetic number, because the mean of its divisors is an integer number (268618903).

Almost surely, 2^1074400861 is an apocalyptic number.

It is an amenable number.

1074400861 is a deficient number, since it is larger than the sum of its proper divisors (74751).

1074400861 is an equidigital number, since it uses as much as digits as its factorization.

1074400861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74750.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1074400861 is about 32778.0545639914. The cubic root of 1074400861 is about 1024.2094593723.

The spelling of 1074400861 in words is "one billion, seventy-four million, four hundred thousand, eight hundred sixty-one".