1034621643 has 16 divisors (see below), whose sum is σ = 1523039616. Its totient is φ = 619487040.

The previous prime is 1034621641. The next prime is 1034621647. The reversal of 1034621643 is 3461264301.

It is not a de Polignac number, because 1034621643 - 2¹ = 1034621641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1034621643.

It is not an unprimeable number, because it can be changed into a prime (1034621641) 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 in 15 ways as a sum of consecutive naturals, for example, 186130 + ... + 191607.

It is an arithmetic number, because the mean of its divisors is an integer number (95189976).

Almost surely, 2^1034621643 is an apocalyptic number.

1034621643 is a deficient number, since it is larger than the sum of its proper divisors (488417973).

1034621643 is a wasteful number, since it uses less digits than its factorization.

1034621643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377834.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1034621643 is about 32165.5350180904. The cubic root of 1034621643 is about 1011.4098674597.

Adding to 1034621643 its reverse (3461264301), we get a palindrome (4495885944).

The spelling of 1034621643 in words is "one billion, thirty-four million, six hundred twenty-one thousand, six hundred forty-three".