1151421666 has 32 divisors (see below), whose sum is σ = 2345761728. Its totient is φ = 376696320.

The previous prime is 1151421629. The next prime is 1151421703. The reversal of 1151421666 is 6661241511.

It is an interprime number because it is at equal distance from previous prime (1151421629) and next prime (1151421703).

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, 107866 + ... + 118058.

It is an arithmetic number, because the mean of its divisors is an integer number (73305054).

Almost surely, 2^1151421666 is an apocalyptic number.

1151421666 is an abundant number, since it is smaller than the sum of its proper divisors (1194340062).

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

1151421666 is a wasteful number, since it uses less digits than its factorization.

1151421666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10546.

The product of its digits is 8640, while the sum is 33.

The square root of 1151421666 is about 33932.6047629710. The cubic root of 1151421666 is about 1048.1211042624.

The spelling of 1151421666 in words is "one billion, one hundred fifty-one million, four hundred twenty-one thousand, six hundred sixty-six".