1053862781 has 4 divisors (see below), whose sum is σ = 1055789952. Its totient is φ = 1051935612.

The previous prime is 1053862753. The next prime is 1053862787. The reversal of 1053862781 is 1872683501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053862781 is a prime.

It is a super-2 number, since 2×1053862781² = 2221253522354107922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053862787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962765 + ... + 963858.

It is an arithmetic number, because the mean of its divisors is an integer number (263947488).

Almost surely, 2^1053862781 is an apocalyptic number.

It is an amenable number.

1053862781 is a deficient number, since it is larger than the sum of its proper divisors (1927171).

1053862781 is an equidigital number, since it uses as much as digits as its factorization.

1053862781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927170.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1053862781 is about 32463.2527791039. The cubic root of 1053862781 is about 1017.6412177147.

The spelling of 1053862781 in words is "one billion, fifty-three million, eight hundred sixty-two thousand, seven hundred eighty-one".