1245540650 has 24 divisors (see below), whose sum is σ = 2317830444. Its totient is φ = 497974400.

The previous prime is 1245540641. The next prime is 1245540697. The reversal of 1245540650 is 560455421.

It can be written as a sum of positive squares in 6 ways, for example, as 387577969 + 857962681 = 19687^2 + 29291^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126920 + ... + 136380.

Almost surely, 2^1245540650 is an apocalyptic number.

1245540650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245540650 is a deficient number, since it is larger than the sum of its proper divisors (1072289794).

1245540650 is a wasteful number, since it uses less digits than its factorization.

1245540650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106 (or 12101 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 1245540650 is about 35292.2179807390. The cubic root of 1245540650 is about 1075.9348349170.

The spelling of 1245540650 in words is "one billion, two hundred forty-five million, five hundred forty thousand, six hundred fifty".