1053391937 has 4 divisors (see below), whose sum is σ = 1134422100. Its totient is φ = 972361776.

The previous prime is 1053391921. The next prime is 1053391979. The reversal of 1053391937 is 7391933501.

It is a Cunningham number, because it is equal to 32456²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7391933501 = 41 ⋅180291061.

It can be written as a sum of positive squares in 2 ways, for example, as 155850256 + 897541681 = 12484^2 + 29959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1053391937 - 2⁴ = 1053391921 is a prime.

It is a super-2 number, since 2×1053391937² = 2219269145873223938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1053391894 and 1053391903.

It is not an unprimeable number, because it can be changed into a prime (1053391987) 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, 40515062 + ... + 40515087.

It is an arithmetic number, because the mean of its divisors is an integer number (283605525).

Almost surely, 2^1053391937 is an apocalyptic number.

It is an amenable number.

1053391937 is a deficient number, since it is larger than the sum of its proper divisors (81030163).

1053391937 is an equidigital number, since it uses as much as digits as its factorization.

1053391937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81030162.

The product of its (nonzero) digits is 76545, while the sum is 41.

The square root of 1053391937 is about 32456.0000154055. Note that the first 4 decimals coincide. The cubic root of 1053391937 is about 1017.4896414861.

The spelling of 1053391937 in words is "one billion, fifty-three million, three hundred ninety-one thousand, nine hundred thirty-seven".