1285740153 has 6 divisors (see below), whose sum is σ = 1857180234. Its totient is φ = 857160096.

The previous prime is 1285740151. The next prime is 1285740163. The reversal of 1285740153 is 3510475821.

It can be written as a sum of positive squares in only one way, i.e., 995276304 + 290463849 = 31548^2 + 17043^2 .

It is not a de Polignac number, because 1285740153 - 2¹ = 1285740151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1285740151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71430000 + ... + 71430017.

It is an arithmetic number, because the mean of its divisors is an integer number (309530039).

Almost surely, 2^1285740153 is an apocalyptic number.

It is an amenable number.

1285740153 is a deficient number, since it is larger than the sum of its proper divisors (571440081).

1285740153 is a wasteful number, since it uses less digits than its factorization.

1285740153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142860023 (or 142860020 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1285740153 is about 35857.2189802835. The cubic root of 1285740153 is about 1087.3876652892.

The spelling of 1285740153 in words is "one billion, two hundred eighty-five million, seven hundred forty thousand, one hundred fifty-three".