1211749470 has 40 divisors (see below), whose sum is σ = 3258261864. Its totient is φ = 323132976.

The previous prime is 1211749463. The next prime is 1211749499. The reversal of 1211749470 is 749471121.

1211749470 is a `hidden beast` number, since 12 + 1 + 174 + 9 + 470 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 747184 + ... + 748803.

Almost surely, 2^1211749470 is an apocalyptic number.

1211749470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211749470 is an abundant number, since it is smaller than the sum of its proper divisors (2046512394).

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

1211749470 is a wasteful number, since it uses less digits than its factorization.

1211749470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496006 (or 1495997 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1211749470 is about 34810.1920419868. The cubic root of 1211749470 is about 1066.1155539568.

The spelling of 1211749470 in words is "one billion, two hundred eleven million, seven hundred forty-nine thousand, four hundred seventy".