1957453689 has 8 divisors (see below), whose sum is σ = 2610316800. Its totient is φ = 1304779856.

The previous prime is 1957453643. The next prime is 1957453691. The reversal of 1957453689 is 9863547591.

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 1957453689 - 2¹¹ = 1957451641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1957453699) 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 7 ways as a sum of consecutive naturals, for example, 21114 + ... + 66035.

It is an arithmetic number, because the mean of its divisors is an integer number (326289600).

Almost surely, 2^1957453689 is an apocalyptic number.

It is an amenable number.

1957453689 is a deficient number, since it is larger than the sum of its proper divisors (652863111).

1957453689 is an equidigital number, since it uses as much as digits as its factorization.

1957453689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94639.

The product of its digits is 8164800, while the sum is 57.

The square root of 1957453689 is about 44243.1202448471. The cubic root of 1957453689 is about 1250.9227722788.

The spelling of 1957453689 in words is "one billion, nine hundred fifty-seven million, four hundred fifty-three thousand, six hundred eighty-nine".