1243453630 has 8 divisors (see below), whose sum is σ = 2238216552. Its totient is φ = 497381448.

The previous prime is 1243453597. The next prime is 1243453643. The reversal of 1243453630 is 363543421.

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

It is a junction number, because it is equal to n+sod(n) for n = 1243453592 and 1243453601.

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, 62172672 + ... + 62172691.

It is an arithmetic number, because the mean of its divisors is an integer number (279777069).

Almost surely, 2^1243453630 is an apocalyptic number.

1243453630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243453630 is a deficient number, since it is larger than the sum of its proper divisors (994762922).

1243453630 is a wasteful number, since it uses less digits than its factorization.

1243453630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124345370.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 1243453630 is about 35262.6378763699. The cubic root of 1243453630 is about 1075.3335557674. Note that the first 3 decimals are identical.

The spelling of 1243453630 in words is "one billion, two hundred forty-three million, four hundred fifty-three thousand, six hundred thirty".