1286825982 has 32 divisors (see below), whose sum is σ = 2934664992. Its totient is φ = 372655104.

The previous prime is 1286825963. The next prime is 1286825983. The reversal of 1286825982 is 2895286821.

It is a super-2 number, since 2×1286825982² = 3311842215900528648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286825983) 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, 483903 + ... + 486554.

It is an arithmetic number, because the mean of its divisors is an integer number (91708281).

Almost surely, 2^1286825982 is an apocalyptic number.

1286825982 is an abundant number, since it is smaller than the sum of its proper divisors (1647839010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1286825982 is a wasteful number, since it uses less digits than its factorization.

1286825982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970492.

The product of its digits is 1105920, while the sum is 51.

The square root of 1286825982 is about 35872.3567946128. The cubic root of 1286825982 is about 1087.6936848313.

The spelling of 1286825982 in words is "one billion, two hundred eighty-six million, eight hundred twenty-five thousand, nine hundred eighty-two".