1211590490 has 32 divisors (see below), whose sum is σ = 2411729856. Its totient is φ = 434540160.

The previous prime is 1211590469. The next prime is 1211590517. The reversal of 1211590490 is 940951121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67412 + ... + 83471.

It is an arithmetic number, because the mean of its divisors is an integer number (75366558).

Almost surely, 2^1211590490 is an apocalyptic number.

1211590490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211590490 is a deficient number, since it is larger than the sum of its proper divisors (1200139366).

1211590490 is a wasteful number, since it uses less digits than its factorization.

1211590490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150974.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1211590490 is about 34807.9084404680. The cubic root of 1211590490 is about 1066.0689275796.

The spelling of 1211590490 in words is "one billion, two hundred eleven million, five hundred ninety thousand, four hundred ninety".