1691228389150 has 12 divisors (see below), whose sum is σ = 3145684803912. Its totient is φ = 676491355640.

The previous prime is 1691228389133. The next prime is 1691228389163. The reversal of 1691228389150 is 519838221961.

It is a junction number, because it is equal to n+sod(n) for n = 1691228389091 and 1691228389100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16912283842 + ... + 16912283941.

It is an arithmetic number, because the mean of its divisors is an integer number (262140400326).

Almost surely, 2^{1691228389150} is an apocalyptic number.

1691228389150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1691228389150 is a deficient number, since it is larger than the sum of its proper divisors (1454456414762).

1691228389150 is a wasteful number, since it uses less digits than its factorization.

1691228389150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33824567795 (or 33824567790 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 1691228389150 in words is "one trillion, six hundred ninety-one billion, two hundred twenty-eight million, three hundred eighty-nine thousand, one hundred fifty".