1071621694 has 16 divisors (see below), whose sum is σ = 1888452720. Its totient is φ = 449631360.

The previous prime is 1071621689. The next prime is 1071621697. The reversal of 1071621694 is 4961261701.

It is a super-2 number, since 2×1071621694² = 2296746110102859272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071621697) 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, 1873179 + ... + 1873750.

It is an arithmetic number, because the mean of its divisors is an integer number (118028295).

Almost surely, 2^1071621694 is an apocalyptic number.

1071621694 is a deficient number, since it is larger than the sum of its proper divisors (816831026).

1071621694 is a wasteful number, since it uses less digits than its factorization.

1071621694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746955.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1071621694 is about 32735.6333984849. The cubic root of 1071621694 is about 1023.3255847456.

The spelling of 1071621694 in words is "one billion, seventy-one million, six hundred twenty-one thousand, six hundred ninety-four".