1285390495 has 8 divisors (see below), whose sum is σ = 1554614784. Its totient is φ = 1020214944.

The previous prime is 1285390487. The next prime is 1285390499. The reversal of 1285390495 is 5940935821.

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 1285390495 - 2³ = 1285390487 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 (1285390499) 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, 1011484 + ... + 1012753.

It is an arithmetic number, because the mean of its divisors is an integer number (194326848).

Almost surely, 2^1285390495 is an apocalyptic number.

1285390495 is a deficient number, since it is larger than the sum of its proper divisors (269224289).

1285390495 is a wasteful number, since it uses less digits than its factorization.

1285390495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024369.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 1285390495 is about 35852.3429499384. The cubic root of 1285390495 is about 1087.2890843883.

The spelling of 1285390495 in words is "one billion, two hundred eighty-five million, three hundred ninety thousand, four hundred ninety-five".