1642031147 has 2 divisors, whose sum is σ = 1642031148. Its totient is φ = 1642031146.

The previous prime is 1642031143. The next prime is 1642031179. The reversal of 1642031147 is 7411302461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642031147 - 2² = 1642031143 is a prime.

It is not a weakly prime, because it can be changed into another prime (1642031141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821015573 + 821015574.

It is an arithmetic number, because the mean of its divisors is an integer number (821015574).

Almost surely, 2^1642031147 is an apocalyptic number.

1642031147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642031147 is an equidigital number, since it uses as much as digits as its factorization.

1642031147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1642031147 is about 40521.9835027853. The cubic root of 1642031147 is about 1179.7603523193.

The spelling of 1642031147 in words is "one billion, six hundred forty-two million, thirty-one thousand, one hundred forty-seven".