1003640654 has 4 divisors (see below), whose sum is σ = 1505460984. Its totient is φ = 501820326.

The previous prime is 1003640639. The next prime is 1003640663. The reversal of 1003640654 is 4560463001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4560463001 = 5903 ⋅772567.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250910162 + ... + 250910165.

It is an arithmetic number, because the mean of its divisors is an integer number (376365246).

Almost surely, 2^1003640654 is an apocalyptic number.

1003640654 is a deficient number, since it is larger than the sum of its proper divisors (501820330).

1003640654 is an equidigital number, since it uses as much as digits as its factorization.

1003640654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501820329.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1003640654 is about 31680.2880984375. The cubic root of 1003640654 is about 1001.2120815980.

The spelling of 1003640654 in words is "one billion, three million, six hundred forty thousand, six hundred fifty-four".