1201757823 has 16 divisors (see below), whose sum is σ = 2034722560. Its totient is φ = 686718648.

The previous prime is 1201757807. The next prime is 1201757903. The reversal of 1201757823 is 3287571021.

It is not a de Polignac number, because 1201757823 - 2⁴ = 1201757807 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 (1201757423) 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 15 ways as a sum of consecutive naturals, for example, 3179065 + ... + 3179442.

It is an arithmetic number, because the mean of its divisors is an integer number (127170160).

Almost surely, 2^1201757823 is an apocalyptic number.

1201757823 is a deficient number, since it is larger than the sum of its proper divisors (832964737).

1201757823 is an equidigital number, since it uses as much as digits as its factorization.

1201757823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358523 (or 6358517 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1201757823 is about 34666.3788561771. The cubic root of 1201757823 is about 1063.1771953819.

The spelling of 1201757823 in words is "one billion, two hundred one million, seven hundred fifty-seven thousand, eight hundred twenty-three".