1143549690 has 16 divisors (see below), whose sum is σ = 2744519328. Its totient is φ = 304946576.

The previous prime is 1143549689. The next prime is 1143549709. The reversal of 1143549690 is 969453411.

It is a super-2 number, since 2×1143549690² = 2615411786998192200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19059132 + ... + 19059191.

It is an arithmetic number, because the mean of its divisors is an integer number (171532458).

Almost surely, 2^1143549690 is an apocalyptic number.

1143549690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143549690 is an abundant number, since it is smaller than the sum of its proper divisors (1600969638).

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

1143549690 is a wasteful number, since it uses less digits than its factorization.

1143549690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38118333.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1143549690 is about 33816.4115482409. The cubic root of 1143549690 is about 1045.7270613151.

The spelling of 1143549690 in words is "one billion, one hundred forty-three million, five hundred forty-nine thousand, six hundred ninety".