1900349629 has 2 divisors, whose sum is σ = 1900349630. Its totient is φ = 1900349628.

The previous prime is 1900349623. The next prime is 1900349669. The reversal of 1900349629 is 9269430091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1432622500 + 467727129 = 37850^2 + 21627^2 .

It is an emirp because it is prime and its reverse (9269430091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1900349629 - 2⁷ = 1900349501 is a prime.

It is a super-2 number, since 2×1900349629² = 7222657424880875282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1900349623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950174814 + 950174815.

It is an arithmetic number, because the mean of its divisors is an integer number (950174815).

Almost surely, 2^1900349629 is an apocalyptic number.

It is an amenable number.

1900349629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900349629 is an equidigital number, since it uses as much as digits as its factorization.

1900349629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1900349629 is about 43592.9997706054. Note that the first 3 decimals coincide. The cubic root of 1900349629 is about 1238.6382964284.

The spelling of 1900349629 in words is "one billion, nine hundred million, three hundred forty-nine thousand, six hundred twenty-nine".