1285337948 has 12 divisors (see below), whose sum is σ = 2250921120. Its totient is φ = 642217632.

The previous prime is 1285337929. The next prime is 1285337953. The reversal of 1285337948 is 8497335821.

It is a junction number, because it is equal to n+sod(n) for n = 1285337896 and 1285337905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106388 + ... + 117851.

It is an arithmetic number, because the mean of its divisors is an integer number (187576760).

Almost surely, 2^1285337948 is an apocalyptic number.

It is an amenable number.

1285337948 is a deficient number, since it is larger than the sum of its proper divisors (965583172).

1285337948 is a wasteful number, since it uses less digits than its factorization.

1285337948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225676 (or 225674 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 1285337948 is about 35851.6101172597. The cubic root of 1285337948 is about 1087.2742679938.

The spelling of 1285337948 in words is "one billion, two hundred eighty-five million, three hundred thirty-seven thousand, nine hundred forty-eight".