1901917941 has 16 divisors (see below), whose sum is σ = 3161630208. Its totient is φ = 988009200.

The previous prime is 1901917937. The next prime is 1901918021. The reversal of 1901917941 is 1497191091.

It is not a de Polignac number, because 1901917941 - 2² = 1901917937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1901917893 and 1901917902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901917931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116475 + ... + 4116936.

It is an arithmetic number, because the mean of its divisors is an integer number (197601888).

Almost surely, 2^1901917941 is an apocalyptic number.

1901917941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1901917941 is a deficient number, since it is larger than the sum of its proper divisors (1259712267).

1901917941 is a wasteful number, since it uses less digits than its factorization.

1901917941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8233432.

The product of its (nonzero) digits is 20412, while the sum is 42.

The square root of 1901917941 is about 43610.9841783008. The cubic root of 1901917941 is about 1238.9789420186.

The spelling of 1901917941 in words is "one billion, nine hundred one million, nine hundred seventeen thousand, nine hundred forty-one".