1901247406 has 4 divisors (see below), whose sum is σ = 2851871112. Its totient is φ = 950623702.

The previous prime is 1901247373. The next prime is 1901247419. The reversal of 1901247406 is 6047421091.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1901247406² = 7229483397643457672, which contains 22 as substring.

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, 475311850 + ... + 475311853.

It is an arithmetic number, because the mean of its divisors is an integer number (712967778).

Almost surely, 2^1901247406 is an apocalyptic number.

1901247406 is a deficient number, since it is larger than the sum of its proper divisors (950623706).

1901247406 is an equidigital number, since it uses as much as digits as its factorization.

1901247406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950623705.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1901247406 is about 43603.2958157981. The cubic root of 1901247406 is about 1238.8333212256.

Adding to 1901247406 its reverse (6047421091), we get a palindrome (7948668497).

The spelling of 1901247406 in words is "one billion, nine hundred one million, two hundred forty-seven thousand, four hundred six".