1801140257 has 8 divisors (see below), whose sum is σ = 2070773376. Its totient is φ = 1534588992.

The previous prime is 1801140241. The next prime is 1801140277. The reversal of 1801140257 is 7520411081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1801140257 - 2⁴ = 1801140241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1801140277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769208 + ... + 771545.

It is an arithmetic number, because the mean of its divisors is an integer number (258846672).

Almost surely, 2^1801140257 is an apocalyptic number.

It is an amenable number.

1801140257 is a deficient number, since it is larger than the sum of its proper divisors (269633119).

1801140257 is a wasteful number, since it uses less digits than its factorization.

1801140257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540927.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1801140257 is about 42439.8428013111. The cubic root of 1801140257 is about 1216.6972068729.

The spelling of 1801140257 in words is "one billion, eight hundred one million, one hundred forty thousand, two hundred fifty-seven".