1265854983 has 8 divisors (see below), whose sum is σ = 1696644096. Its totient is φ = 839484600.

The previous prime is 1265854973. The next prime is 1265855011. The reversal of 1265854983 is 3894585621.

1265854983 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1265854983 - 2¹⁴ = 1265838599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265854913) 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, 1104013 + ... + 1105158.

It is an arithmetic number, because the mean of its divisors is an integer number (212080512).

Almost surely, 2^1265854983 is an apocalyptic number.

1265854983 is a deficient number, since it is larger than the sum of its proper divisors (430789113).

1265854983 is a wasteful number, since it uses less digits than its factorization.

1265854983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209365.

The product of its digits is 2073600, while the sum is 51.

The square root of 1265854983 is about 35578.8558416372. The cubic root of 1265854983 is about 1081.7526933441.

The spelling of 1265854983 in words is "one billion, two hundred sixty-five million, eight hundred fifty-four thousand, nine hundred eighty-three".