1801053157 has 4 divisors (see below), whose sum is σ = 1879359840. Its totient is φ = 1722746476.

The previous prime is 1801053143. The next prime is 1801053161. The reversal of 1801053157 is 7513501081.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7513501081 = 3221 ⋅2332661.

It is a cyclic number.

It is not a de Polignac number, because 1801053157 - 2¹⁹ = 1800528869 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 (1801053257) 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, 39153307 + ... + 39153352.

It is an arithmetic number, because the mean of its divisors is an integer number (469839960).

Almost surely, 2^1801053157 is an apocalyptic number.

It is an amenable number.

1801053157 is a deficient number, since it is larger than the sum of its proper divisors (78306683).

1801053157 is an equidigital number, since it uses as much as digits as its factorization.

1801053157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78306682.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 1801053157 is about 42438.8166305329. The cubic root of 1801053157 is about 1216.6775941055.

The spelling of 1801053157 in words is "one billion, eight hundred one million, fifty-three thousand, one hundred fifty-seven".