1201957877 has 4 divisors (see below), whose sum is σ = 1203698016. Its totient is φ = 1200217740.

The previous prime is 1201957871. The next prime is 1201957901. The reversal of 1201957877 is 7787591021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1201957877 - 2²² = 1197763573 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 (1201957871) 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, 869033 + ... + 870414.

It is an arithmetic number, because the mean of its divisors is an integer number (300924504).

Almost surely, 2^1201957877 is an apocalyptic number.

It is an amenable number.

1201957877 is a deficient number, since it is larger than the sum of its proper divisors (1740139).

1201957877 is an equidigital number, since it uses as much as digits as its factorization.

1201957877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740138.

The product of its (nonzero) digits is 246960, while the sum is 47.

The square root of 1201957877 is about 34669.2641542909. The cubic root of 1201957877 is about 1063.2361870372.

It can be divided in two parts, 12019 and 57877, that added together give a palindrome (69896).

The spelling of 1201957877 in words is "one billion, two hundred one million, nine hundred fifty-seven thousand, eight hundred seventy-seven".