1285498383 has 16 divisors (see below), whose sum is σ = 1846548480. Its totient is φ = 790773984.

The previous prime is 1285498343. The next prime is 1285498387. The reversal of 1285498383 is 3838945821.

It is not a de Polignac number, because 1285498383 - 2¹³ = 1285490191 is a prime.

It is a super-2 number, since 2×1285498383² = 3305012185391229378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285498387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140610 + ... + 149472.

It is an arithmetic number, because the mean of its divisors is an integer number (115409280).

Almost surely, 2^1285498383 is an apocalyptic number.

1285498383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1285498383 is a deficient number, since it is larger than the sum of its proper divisors (561050097).

1285498383 is a wasteful number, since it uses less digits than its factorization.

1285498383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12598.

The product of its digits is 1658880, while the sum is 51.

The square root of 1285498383 is about 35853.8475341211. The cubic root of 1285498383 is about 1087.3195037209.

The spelling of 1285498383 in words is "one billion, two hundred eighty-five million, four hundred ninety-eight thousand, three hundred eighty-three".