1285051449 has 8 divisors (see below), whose sum is σ = 1869165792. Its totient is φ = 778819040.

The previous prime is 1285051399. The next prime is 1285051483. The reversal of 1285051449 is 9441505821.

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 1285051449 - 2¹³ = 1285043257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285051499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19470444 + ... + 19470509.

It is an arithmetic number, because the mean of its divisors is an integer number (233645724).

Almost surely, 2^1285051449 is an apocalyptic number.

It is an amenable number.

1285051449 is a deficient number, since it is larger than the sum of its proper divisors (584114343).

1285051449 is a wasteful number, since it uses less digits than its factorization.

1285051449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38940967.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 1285051449 is about 35847.6142720823. The cubic root of 1285051449 is about 1087.1934783103.

The spelling of 1285051449 in words is "one billion, two hundred eighty-five million, fifty-one thousand, four hundred forty-nine".