1157890441 has 4 divisors (see below), whose sum is σ = 1158053652. Its totient is φ = 1157727232.

The previous prime is 1157890429. The next prime is 1157890483. The reversal of 1157890441 is 1440987511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1440987511 = 107 ⋅13467173.

It can be written as a sum of positive squares in 2 ways, for example, as 247118400 + 910772041 = 15720^2 + 30179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157890441 - 2¹⁹ = 1157366153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157890394 and 1157890403.

It is not an unprimeable number, because it can be changed into a prime (1157890411) 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, 70456 + ... + 85321.

It is an arithmetic number, because the mean of its divisors is an integer number (289513413).

Almost surely, 2^1157890441 is an apocalyptic number.

It is an amenable number.

1157890441 is a deficient number, since it is larger than the sum of its proper divisors (163211).

1157890441 is an equidigital number, since it uses as much as digits as its factorization.

1157890441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163210.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 1157890441 is about 34027.7892464380. The cubic root of 1157890441 is about 1050.0802481373.

The spelling of 1157890441 in words is "one billion, one hundred fifty-seven million, eight hundred ninety thousand, four hundred forty-one".