1284985801 has 8 divisors (see below), whose sum is σ = 1424783808. Its totient is φ = 1149018000.

The previous prime is 1284985777. The next prime is 1284985829. The reversal of 1284985801 is 1085894821.

It is a happy number.

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 1284985801 - 2²⁵ = 1251431369 is a prime.

It is a super-2 number, since 2×1284985801² = 3302377017543223202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284985841) 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, 956845 + ... + 958186.

It is an arithmetic number, because the mean of its divisors is an integer number (178097976).

Almost surely, 2^1284985801 is an apocalyptic number.

1284985801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1284985801 is a deficient number, since it is larger than the sum of its proper divisors (139798007).

1284985801 is a wasteful number, since it uses less digits than its factorization.

1284985801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915103.

The product of its (nonzero) digits is 184320, while the sum is 46.

The square root of 1284985801 is about 35846.6986067058. The cubic root of 1284985801 is about 1087.1749645787.

The spelling of 1284985801 in words is "one billion, two hundred eighty-four million, nine hundred eighty-five thousand, eight hundred one".