1429620649 has 2 divisors, whose sum is σ = 1429620650. Its totient is φ = 1429620648.

The previous prime is 1429620623. The next prime is 1429620659. The reversal of 1429620649 is 9460269241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 761760000 + 667860649 = 27600^2 + 25843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1429620649 - 2¹⁵ = 1429587881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1429620659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714810324 + 714810325.

It is an arithmetic number, because the mean of its divisors is an integer number (714810325).

Almost surely, 2^1429620649 is an apocalyptic number.

It is an amenable number.

1429620649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429620649 is an equidigital number, since it uses as much as digits as its factorization.

1429620649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1429620649 is about 37810.3246349459. The cubic root of 1429620649 is about 1126.5235388347.

The spelling of 1429620649 in words is "one billion, four hundred twenty-nine million, six hundred twenty thousand, six hundred forty-nine".