1040693851 has 4 divisors (see below), whose sum is σ = 1040764432. Its totient is φ = 1040623272.

The previous prime is 1040693837. The next prime is 1040693987. The reversal of 1040693851 is 1583960401.

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: 1583960401 = 39799².

It is a cyclic number.

It is not a de Polignac number, because 1040693851 - 2¹⁹ = 1040169563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040693851.

It is not an unprimeable number, because it can be changed into a prime (1040693831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3816 + ... + 45781.

It is an arithmetic number, because the mean of its divisors is an integer number (260191108).

Almost surely, 2^1040693851 is an apocalyptic number.

1040693851 is a deficient number, since it is larger than the sum of its proper divisors (70581).

1040693851 is an equidigital number, since it uses as much as digits as its factorization.

1040693851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70580.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1040693851 is about 32259.7869025820. The cubic root of 1040693851 is about 1013.3846683678.

The spelling of 1040693851 in words is "one billion, forty million, six hundred ninety-three thousand, eight hundred fifty-one".