1264771746 has 192 divisors, whose sum is σ = 3622993920. Its totient is φ = 321926400.

The previous prime is 1264771723. The next prime is 1264771829. The reversal of 1264771746 is 6471774621.

1264771746 is a `hidden beast` number, since 1 + 2 + 6 + 477 + 174 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1098271 + ... + 1099421.

It is an arithmetic number, because the mean of its divisors is an integer number (18869760).

Almost surely, 2^1264771746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1264771746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811496960).

1264771746 is an abundant number, since it is smaller than the sum of its proper divisors (2358222174).

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

1264771746 is a wasteful number, since it uses less digits than its factorization.

1264771746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1199 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 1264771746 is about 35563.6295391795. The cubic root of 1264771746 is about 1081.4440405717. Note that the first 3 decimals are identical.

The spelling of 1264771746 in words is "one billion, two hundred sixty-four million, seven hundred seventy-one thousand, seven hundred forty-six".