1275349630 has 8 divisors (see below), whose sum is σ = 2295629352. Its totient is φ = 510139848.

The previous prime is 1275349601. The next prime is 1275349651. The reversal of 1275349630 is 369435721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1275349630³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63767472 + ... + 63767491.

It is an arithmetic number, because the mean of its divisors is an integer number (286953669).

Almost surely, 2^1275349630 is an apocalyptic number.

1275349630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275349630 is a deficient number, since it is larger than the sum of its proper divisors (1020279722).

1275349630 is a wasteful number, since it uses less digits than its factorization.

1275349630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127534970.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 1275349630 is about 35712.0376063870. The cubic root of 1275349630 is about 1084.4505503757.

The spelling of 1275349630 in words is "one billion, two hundred seventy-five million, three hundred forty-nine thousand, six hundred thirty".