1021623045 has 8 divisors (see below), whose sum is σ = 1634596896. Its totient is φ = 544865616.

The previous prime is 1021623017. The next prime is 1021623061. The reversal of 1021623045 is 5403261201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021623045 - 2⁶ = 1021622981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34054087 + ... + 34054116.

It is an arithmetic number, because the mean of its divisors is an integer number (204324612).

Almost surely, 2^1021623045 is an apocalyptic number.

1021623045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021623045 is a deficient number, since it is larger than the sum of its proper divisors (612973851).

1021623045 is an equidigital number, since it uses as much as digits as its factorization.

1021623045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68108211.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1021623045 is about 31962.8385003585. The cubic root of 1021623045 is about 1007.1563462089.

Adding to 1021623045 its reverse (5403261201), we get a palindrome (6424884246).

The spelling of 1021623045 in words is "one billion, twenty-one million, six hundred twenty-three thousand, forty-five".