1005145901 has 8 divisors (see below), whose sum is σ = 1045903104. Its totient is φ = 965195920.

The previous prime is 1005145837. The next prime is 1005145943. The reversal of 1005145901 is 1095415001.

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

It is a cyclic number.

It is not a de Polignac number, because 1005145901 - 2⁶ = 1005145837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005145991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199265 + ... + 204246.

It is an arithmetic number, because the mean of its divisors is an integer number (130737888).

Almost surely, 2^1005145901 is an apocalyptic number.

It is an amenable number.

1005145901 is a deficient number, since it is larger than the sum of its proper divisors (40757203).

1005145901 is an equidigital number, since it uses as much as digits as its factorization.

1005145901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403611.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1005145901 is about 31704.0360364418. The cubic root of 1005145901 is about 1001.7123664608.

The spelling of 1005145901 in words is "one billion, five million, one hundred forty-five thousand, nine hundred one".