1930121001 has 8 divisors (see below), whose sum is σ = 2859438560. Its totient is φ = 1286747316.

The previous prime is 1930120987. The next prime is 1930121003. The reversal of 1930121001 is 1001210391.

It is not a de Polignac number, because 1930121001 - 2⁶ = 1930120937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1930121003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35742955 + ... + 35743008.

It is an arithmetic number, because the mean of its divisors is an integer number (357429820).

Almost surely, 2^1930121001 is an apocalyptic number.

It is an amenable number.

1930121001 is a deficient number, since it is larger than the sum of its proper divisors (929317559).

1930121001 is an equidigital number, since it uses as much as digits as its factorization.

1930121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71485972 (or 71485966 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1930121001 is about 43933.1423984217. The cubic root of 1930121001 is about 1245.0730861435.

Adding to 1930121001 its reverse (1001210391), we get a palindrome (2931331392).

The spelling of 1930121001 in words is "one billion, nine hundred thirty million, one hundred twenty-one thousand, one".