1261783352 has 8 divisors (see below), whose sum is σ = 2365843800. Its totient is φ = 630891672.

The previous prime is 1261783343. The next prime is 1261783423. The reversal of 1261783352 is 2533871621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78861452 + ... + 78861467.

It is an arithmetic number, because the mean of its divisors is an integer number (295730475).

Almost surely, 2^1261783352 is an apocalyptic number.

It is an amenable number.

1261783352 is a deficient number, since it is larger than the sum of its proper divisors (1104060448).

1261783352 is a wasteful number, since it uses less digits than its factorization.

1261783352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157722925 (or 157722921 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 1261783352 is about 35521.5899418931. The cubic root of 1261783352 is about 1080.5916260070.

The spelling of 1261783352 in words is "one billion, two hundred sixty-one million, seven hundred eighty-three thousand, three hundred fifty-two".