1213948734 has 16 divisors (see below), whose sum is σ = 2431839888. Its totient is φ = 403992512.

The previous prime is 1213948711. The next prime is 1213948753. The reversal of 1213948734 is 4378493121.

1213948734 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160257 + ... + 167660.

It is an arithmetic number, because the mean of its divisors is an integer number (151989993).

Almost surely, 2^1213948734 is an apocalyptic number.

1213948734 is an abundant number, since it is smaller than the sum of its proper divisors (1217891154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213948734 is a wasteful number, since it uses less digits than its factorization.

1213948734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328539.

The product of its digits is 145152, while the sum is 42.

The square root of 1213948734 is about 34841.7670906629. The cubic root of 1213948734 is about 1066.7601460827.

The spelling of 1213948734 in words is "one billion, two hundred thirteen million, nine hundred forty-eight thousand, seven hundred thirty-four".